Week 11_ Data Dive GLM 2
2023-11-06
R Markdown
This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.
When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:
Load the Libraries:
library(tidyverse) #Loads the tidyverse package which contains helpful data manipulation and visualization functions like dplyr, ggplot2## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
## ✔ dplyr 1.1.2 ✔ readr 2.1.4
## ✔ forcats 1.0.0 ✔ stringr 1.5.0
## ✔ ggplot2 3.4.3 ✔ tibble 3.2.1
## ✔ lubridate 1.9.2 ✔ tidyr 1.3.0
## ✔ purrr 1.0.2
## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag() masks stats::lag()
## ℹ Use the conflicted package (<http://conflicted.r-lib.org/>) to force all conflicts to become errorslibrary(ggplot2) #Specifically loads ggplot2 for data visualizationLoad the Dataset:
Online_Retail <- read.csv('C:/Users/laasy/Documents/Fall 2023/Intro to Statistics in R/Datasets for Final Project/OnlineRetail.csv')
#Reads in the OnlineRetail.csv data into a dataframe called Online_RetailFiltering the dataset:
# Filter for complete cases
retail_complete <- na.omit(Online_Retail) #Removes any rows with NA values to create a dataset with complete cases onlyExploring and Summary of the dataset:
# Explore data
glimpse(retail_complete) #Provides a quick overview of the variables, classes, first few rows etc## Rows: 406,829
## Columns: 8
## $ InvoiceNo <chr> "536365", "536365", "536365", "536365", "536365", "536365"…
## $ StockCode <chr> "85123A", "71053", "84406B", "84029G", "84029E", "22752", …
## $ Description <chr> "WHITE HANGING HEART T-LIGHT HOLDER", "WHITE METAL LANTERN…
## $ Quantity <int> 6, 6, 8, 6, 6, 2, 6, 6, 6, 32, 6, 6, 8, 6, 6, 3, 2, 3, 3, …
## $ InvoiceDate <chr> "12/1/2010 8:26", "12/1/2010 8:26", "12/1/2010 8:26", "12/…
## $ UnitPrice <dbl> 2.55, 3.39, 2.75, 3.39, 3.39, 7.65, 4.25, 1.85, 1.85, 1.69…
## $ CustomerID <int> 17850, 17850, 17850, 17850, 17850, 17850, 17850, 17850, 17…
## $ Country <chr> "United Kingdom", "United Kingdom", "United Kingdom", "Uni…summary(retail_complete) #Generates summary statistics for each variable like mean, percentiles, range## InvoiceNo StockCode Description Quantity
## Length:406829 Length:406829 Length:406829 Min. :-80995.00
## Class :character Class :character Class :character 1st Qu.: 2.00
## Mode :character Mode :character Mode :character Median : 5.00
## Mean : 12.06
## 3rd Qu.: 12.00
## Max. : 80995.00
## InvoiceDate UnitPrice CustomerID Country
## Length:406829 Min. : 0.00 Min. :12346 Length:406829
## Class :character 1st Qu.: 1.25 1st Qu.:13953 Class :character
## Mode :character Median : 1.95 Median :15152 Mode :character
## Mean : 3.46 Mean :15288
## 3rd Qu.: 3.75 3rd Qu.:16791
## Max. :38970.00 Max. :18287Building Linear Model :
I’m considering the response variable as Quantity and explanatory variables as Invoice date
Visualization of the Quantity and Invoice before applying the model:
# Visualize relationship between Quantity and InvoiceDate
ggplot(retail_complete, aes(x=InvoiceDate, y=Quantity)) +
geom_point()
#Scatterplot of Quantity vs InvoiceDate to visualize relationshipLinear Model:
# Keep only 2 columns
simple_data <- retail_complete %>%
select(Quantity, InvoiceDate)
# Take 1000 row sample
set.seed(123)
simple_data <- simple_data %>%
slice_sample(n = 1000)
# Linear model
model <- lm(Quantity ~ InvoiceDate,
data = simple_data)
# Print model object
model##
## Call:
## lm(formula = Quantity ~ InvoiceDate, data = simple_data)
##
## Coefficients:
## (Intercept) InvoiceDate1/10/2011 13:22
## 2.400e+01 -1.400e+01
## InvoiceDate1/10/2011 15:51 InvoiceDate1/10/2011 16:29
## -1.200e+01 4.721e-13
## InvoiceDate1/11/2011 12:11 InvoiceDate1/11/2011 13:26
## -1.900e+01 5.600e+01
## InvoiceDate1/12/2011 14:57 InvoiceDate1/12/2011 16:51
## -2.300e+01 -1.200e+01
## InvoiceDate1/13/2011 15:18 InvoiceDate1/14/2011 13:28
## -1.800e+01 -2.300e+01
## InvoiceDate1/14/2011 14:45 InvoiceDate1/17/2011 12:45
## -1.900e+01 1.514e-12
## InvoiceDate1/17/2011 13:23 InvoiceDate1/17/2011 16:23
## -2.100e+01 -2.300e+01
## InvoiceDate1/18/2011 16:45 InvoiceDate1/19/2011 11:15
## -2.300e+01 -2.300e+01
## InvoiceDate1/19/2011 13:32 InvoiceDate1/19/2011 16:19
## -2.000e+01 -2.200e+01
## InvoiceDate1/20/2011 12:34 InvoiceDate1/21/2011 11:19
## 2.400e+01 -2.000e+01
## InvoiceDate1/21/2011 13:07 InvoiceDate1/21/2011 9:03
## -1.200e+01 -2.549e-13
## InvoiceDate1/23/2011 10:43 InvoiceDate1/23/2011 12:07
## -1.900e+01 -2.200e+01
## InvoiceDate1/23/2011 12:19 InvoiceDate1/23/2011 14:58
## -2.100e+01 -2.300e+01
## InvoiceDate1/24/2011 11:39 InvoiceDate1/25/2011 10:38
## -4.000e+00 9.230e-14
## InvoiceDate1/25/2011 12:16 InvoiceDate1/25/2011 14:33
## 2.400e+01 -2.200e+01
## InvoiceDate1/26/2011 13:40 InvoiceDate1/27/2011 12:19
## -2.000e+01 2.600e+01
## InvoiceDate1/27/2011 15:02 InvoiceDate1/27/2011 9:33
## -2.200e+01 -2.200e+01
## InvoiceDate1/27/2011 9:42 InvoiceDate1/28/2011 10:40
## -1.200e+01 -2.000e+01
## InvoiceDate1/28/2011 10:47 InvoiceDate1/28/2011 9:20
## -1.800e+01 -2.200e+01
## InvoiceDate1/30/2011 14:36 InvoiceDate1/30/2011 15:40
## -2.000e+01 -1.200e+01
## InvoiceDate1/30/2011 15:54 InvoiceDate1/31/2011 12:34
## -1.800e+01 1.200e+01
## InvoiceDate1/31/2011 9:51 InvoiceDate1/4/2011 13:30
## -6.000e+00 -1.800e+01
## InvoiceDate1/4/2011 14:12 InvoiceDate1/4/2011 15:50
## 1.000e+00 -2.200e+01
## InvoiceDate1/5/2011 10:35 InvoiceDate1/5/2011 14:48
## -1.800e+01 -2.000e+01
## InvoiceDate1/6/2011 14:14 InvoiceDate1/6/2011 14:53
## -2.300e+01 -2.200e+01
## InvoiceDate1/7/2011 12:28 InvoiceDate1/7/2011 12:44
## -1.200e+01 1.411e-12
## InvoiceDate1/7/2011 14:31 InvoiceDate1/9/2011 11:43
## -2.200e+01 -1.800e+01
## InvoiceDate10/10/2011 11:03 InvoiceDate10/10/2011 13:12
## -2.700e+01 -2.200e+01
## InvoiceDate10/10/2011 13:38 InvoiceDate10/10/2011 17:12
## -1.200e+01 -2.100e+01
## InvoiceDate10/10/2011 9:41 InvoiceDate10/11/2011 10:31
## -2.000e+01 -1.400e+01
## InvoiceDate10/11/2011 13:13 InvoiceDate10/11/2011 14:52
## -2.300e+01 -1.200e+01
## InvoiceDate10/12/2011 10:51 InvoiceDate10/12/2011 11:32
## -2.300e+01 -1.200e+01
## InvoiceDate10/12/2011 11:55 InvoiceDate10/12/2011 14:46
## -1.400e+01 -8.000e+00
## InvoiceDate10/12/2011 17:00 InvoiceDate10/13/2011 10:25
## -2.200e+01 -1.200e+01
## InvoiceDate10/13/2011 10:53 InvoiceDate10/13/2011 12:47
## -2.500e+01 -2.000e+01
## InvoiceDate10/13/2011 12:50 InvoiceDate10/13/2011 12:59
## -1.800e+01 -2.000e+01
## InvoiceDate10/13/2011 14:18 InvoiceDate10/13/2011 14:37
## -1.800e+01 -2.300e+01
## InvoiceDate10/13/2011 15:15 InvoiceDate10/13/2011 15:19
## -2.000e+01 -2.000e+01
## InvoiceDate10/14/2011 10:25 InvoiceDate10/14/2011 10:47
## -2.100e+01 -2.000e+01
## InvoiceDate10/17/2011 10:17 InvoiceDate10/17/2011 12:41
## 1.000e+00 -2.000e+01
## InvoiceDate10/17/2011 13:31 InvoiceDate10/17/2011 13:39
## -2.133e+01 -1.400e+01
## InvoiceDate10/17/2011 14:42 InvoiceDate10/18/2011 12:17
## -2.300e+01 6.500e+00
## InvoiceDate10/18/2011 13:15 InvoiceDate10/18/2011 14:34
## -2.100e+01 -1.200e+01
## InvoiceDate10/18/2011 14:47 InvoiceDate10/18/2011 16:46
## -1.200e+01 -2.100e+01
## InvoiceDate10/19/2011 10:48 InvoiceDate10/19/2011 10:56
## -2.200e+01 -1.200e+01
## InvoiceDate10/19/2011 11:27 InvoiceDate10/19/2011 11:52
## -2.300e+01 -1.800e+01
## InvoiceDate10/19/2011 13:58 InvoiceDate10/19/2011 15:08
## -2.200e+01 -2.000e+01
## InvoiceDate10/2/2011 13:26 InvoiceDate10/2/2011 14:56
## -2.100e+01 -2.200e+01
## InvoiceDate10/20/2011 12:13 InvoiceDate10/20/2011 13:07
## -2.200e+01 -1.200e+01
## InvoiceDate10/20/2011 14:18 InvoiceDate10/20/2011 15:38
## -1.200e+01 -1.400e+01
## InvoiceDate10/20/2011 15:57 InvoiceDate10/21/2011 10:32
## -2.300e+01 -1.200e+01
## InvoiceDate10/21/2011 13:17 InvoiceDate10/21/2011 14:42
## -2.200e+01 -2.100e+01
## InvoiceDate10/21/2011 9:25 InvoiceDate10/23/2011 11:10
## -1.500e+01 1.000e+00
## InvoiceDate10/23/2011 13:10 InvoiceDate10/23/2011 13:49
## -1.600e+01 -2.200e+01
## InvoiceDate10/23/2011 14:47 InvoiceDate10/23/2011 15:11
## -2.200e+01 -2.300e+01
## InvoiceDate10/23/2011 15:45 InvoiceDate10/24/2011 11:33
## -2.000e+01 -2.300e+01
## InvoiceDate10/24/2011 11:56 InvoiceDate10/24/2011 12:53
## 1.000e+00 3.600e+01
## InvoiceDate10/24/2011 14:02 InvoiceDate10/24/2011 14:36
## -2.500e+01 -2.300e+01
## InvoiceDate10/25/2011 12:20 InvoiceDate10/25/2011 12:54
## -2.100e+01 -2.000e+01
## InvoiceDate10/25/2011 13:05 InvoiceDate10/25/2011 13:20
## -2.000e+01 -2.000e+01
## InvoiceDate10/25/2011 17:29 InvoiceDate10/25/2011 17:32
## -1.900e+01 2.400e+01
## InvoiceDate10/26/2011 11:14 InvoiceDate10/26/2011 11:51
## -1.200e+01 -2.100e+01
## InvoiceDate10/27/2011 10:14 InvoiceDate10/27/2011 16:23
## -1.200e+01 -2.200e+01
## InvoiceDate10/27/2011 20:09 InvoiceDate10/28/2011 12:09
## -2.200e+01 -2.000e+01
## InvoiceDate10/28/2011 12:36 InvoiceDate10/28/2011 14:51
## -2.000e+01 -1.200e+01
## InvoiceDate10/28/2011 16:45 InvoiceDate10/30/2011 10:54
## -2.300e+01 -2.100e+01
## InvoiceDate10/30/2011 12:34 InvoiceDate10/30/2011 13:06
## 1.100e-13 -1.800e+01
## InvoiceDate10/30/2011 13:13 InvoiceDate10/30/2011 13:19
## -2.100e+01 -2.100e+01
## InvoiceDate10/30/2011 14:03 InvoiceDate10/31/2011 14:13
## -1.600e+01 -2.000e+01
## InvoiceDate10/31/2011 14:22 InvoiceDate10/4/2011 10:42
## 6.000e+00 1.464e-12
## InvoiceDate10/4/2011 11:33 InvoiceDate10/4/2011 12:22
## -1.200e+01 -2.150e+01
## InvoiceDate10/4/2011 13:25 InvoiceDate10/4/2011 13:35
## -2.200e+01 -1.200e+01
## InvoiceDate10/4/2011 14:53 InvoiceDate10/5/2011 12:49
## -1.400e+01 -2.300e+01
## InvoiceDate10/5/2011 14:03 InvoiceDate10/5/2011 14:47
## -2.000e+01 -2.300e+01
## InvoiceDate10/5/2011 9:47 InvoiceDate10/6/2011 10:45
## -1.800e+01 -1.200e+01
## InvoiceDate10/6/2011 11:48 InvoiceDate10/6/2011 12:15
## -1.200e+01 -2.300e+01
## InvoiceDate10/6/2011 14:50 InvoiceDate10/6/2011 18:56
## -2.100e+01 -2.100e+01
## InvoiceDate10/6/2011 19:49 InvoiceDate10/6/2011 20:38
## -2.100e+01 -3.400e+01
## InvoiceDate10/6/2011 9:28 InvoiceDate10/6/2011 9:38
## -1.200e+01 -1.200e+01
## InvoiceDate10/7/2011 11:32 InvoiceDate10/7/2011 12:28
## -2.200e+01 -2.200e+01
## InvoiceDate10/7/2011 12:38 InvoiceDate10/7/2011 12:44
## -2.200e+01 -1.800e+01
## InvoiceDate10/7/2011 12:58 InvoiceDate10/9/2011 10:48
## -2.600e+01 -2.300e+01
## InvoiceDate10/9/2011 11:15 InvoiceDate10/9/2011 13:58
## -2.300e+01 -2.200e+01
## InvoiceDate11/1/2011 12:34 InvoiceDate11/1/2011 12:39
## 3.600e+01 -2.300e+01
## InvoiceDate11/1/2011 15:55 InvoiceDate11/10/2011 12:29
## -2.300e+01 -2.200e+01
## InvoiceDate11/10/2011 12:37 InvoiceDate11/10/2011 13:46
## -1.750e+01 -2.300e+01
## InvoiceDate11/10/2011 18:04 InvoiceDate11/10/2011 19:53
## -2.200e+01 -2.200e+01
## InvoiceDate11/11/2011 10:32 InvoiceDate11/11/2011 11:06
## -3.000e+00 -2.100e+01
## InvoiceDate11/11/2011 12:17 InvoiceDate11/11/2011 13:46
## -2.000e+01 -1.200e+01
## InvoiceDate11/11/2011 14:50 InvoiceDate11/11/2011 17:01
## -2.300e+01 -2.080e+02
## InvoiceDate11/11/2011 8:39 InvoiceDate11/13/2011 11:44
## -2.200e+01 -2.200e+01
## InvoiceDate11/13/2011 12:27 InvoiceDate11/13/2011 12:47
## -1.200e+01 -2.000e+01
## InvoiceDate11/13/2011 14:09 InvoiceDate11/13/2011 14:42
## -2.300e+01 -2.200e+01
## InvoiceDate11/13/2011 15:57 InvoiceDate11/13/2011 16:18
## -2.300e+01 -2.300e+01
## InvoiceDate11/13/2011 16:22 InvoiceDate11/14/2011 11:02
## -2.200e+01 7.200e+01
## InvoiceDate11/14/2011 12:47 InvoiceDate11/14/2011 14:39
## 5.600e+01 -2.300e+01
## InvoiceDate11/14/2011 14:59 InvoiceDate11/14/2011 15:18
## -2.300e+01 -1.200e+01
## InvoiceDate11/14/2011 15:27 InvoiceDate11/14/2011 16:28
## -2.250e+01 2.012e-13
## InvoiceDate11/14/2011 9:00 InvoiceDate11/15/2011 11:37
## -4.000e+00 -2.300e+01
## InvoiceDate11/15/2011 12:34 InvoiceDate11/15/2011 12:57
## 2.779e-13 -1.200e+01
## InvoiceDate11/15/2011 15:06 InvoiceDate11/15/2011 15:42
## -2.000e+01 -1.200e+01
## InvoiceDate11/15/2011 16:08 InvoiceDate11/15/2011 16:38
## -2.300e+01 -2.100e+01
## InvoiceDate11/16/2011 12:08 InvoiceDate11/16/2011 12:19
## -1.200e+01 -1.400e+01
## InvoiceDate11/16/2011 12:25 InvoiceDate11/16/2011 13:24
## -2.300e+01 -2.200e+01
## InvoiceDate11/16/2011 13:25 InvoiceDate11/16/2011 9:44
## -2.300e+01 1.200e+01
## InvoiceDate11/17/2011 10:01 InvoiceDate11/17/2011 10:52
## -1.200e+01 7.200e+01
## InvoiceDate11/17/2011 12:42 InvoiceDate11/17/2011 12:47
## -1.800e+01 -2.200e+01
## InvoiceDate11/17/2011 12:59 InvoiceDate11/17/2011 14:08
## -1.400e+01 -2.300e+01
## InvoiceDate11/17/2011 14:26 InvoiceDate11/17/2011 15:34
## -2.300e+01 -1.800e+01
## InvoiceDate11/17/2011 16:02 InvoiceDate11/17/2011 17:34
## -1.200e+01 -1.400e+01
## InvoiceDate11/18/2011 10:52 InvoiceDate11/18/2011 12:47
## 2.400e+01 -2.300e+01
## InvoiceDate11/18/2011 13:30 InvoiceDate11/18/2011 13:33
## -1.200e+01 -2.300e+01
## InvoiceDate11/18/2011 15:00 InvoiceDate11/18/2011 9:11
## -1.400e+01 -1.200e+01
## InvoiceDate11/2/2011 10:51 InvoiceDate11/2/2011 11:43
## -1.800e+01 -2.200e+01
## InvoiceDate11/2/2011 12:03 InvoiceDate11/2/2011 14:31
## -5.000e+00 -2.300e+01
## InvoiceDate11/20/2011 11:25 InvoiceDate11/20/2011 11:34
## -1.900e+01 -1.600e+01
## InvoiceDate11/20/2011 11:56 InvoiceDate11/20/2011 12:53
## -2.200e+01 -2.200e+01
## InvoiceDate11/20/2011 12:55 InvoiceDate11/20/2011 13:23
## -1.600e+01 -2.300e+01
## InvoiceDate11/20/2011 14:07 InvoiceDate11/20/2011 14:43
## -1.200e+01 -2.000e+01
## InvoiceDate11/20/2011 15:00 InvoiceDate11/21/2011 13:58
## -2.300e+01 -1.400e+01
## InvoiceDate11/21/2011 15:10 InvoiceDate11/22/2011 10:35
## -2.100e+01 -1.800e+01
## InvoiceDate11/22/2011 13:08 InvoiceDate11/22/2011 14:23
## -1.200e+01 -2.300e+01
## InvoiceDate11/22/2011 15:04 InvoiceDate11/22/2011 15:45
## 1.889e-13 -2.250e+01
## InvoiceDate11/22/2011 16:06 InvoiceDate11/23/2011 10:31
## -2.000e+01 3.800e+01
## InvoiceDate11/23/2011 11:07 InvoiceDate11/23/2011 12:05
## -2.300e+01 -1.600e+01
## InvoiceDate11/23/2011 13:51 InvoiceDate11/23/2011 13:57
## -1.800e+01 -2.300e+01
## InvoiceDate11/23/2011 15:44 InvoiceDate11/23/2011 16:43
## -2.000e+01 -1.200e+01
## InvoiceDate11/23/2011 17:32 InvoiceDate11/23/2011 17:43
## -2.200e+01 -8.000e+00
## InvoiceDate11/23/2011 17:45 InvoiceDate11/23/2011 8:05
## -2.300e+01 -2.000e+01
## InvoiceDate11/24/2011 10:07 InvoiceDate11/24/2011 12:30
## -1.800e+01 -1.200e+01
## InvoiceDate11/24/2011 12:40 InvoiceDate11/24/2011 12:48
## 1.284e-13 -2.300e+01
## InvoiceDate11/24/2011 13:25 InvoiceDate11/24/2011 14:51
## -2.200e+01 -1.200e+01
## InvoiceDate11/24/2011 15:02 InvoiceDate11/24/2011 15:05
## -1.200e+01 1.642e-13
## InvoiceDate11/24/2011 17:06 InvoiceDate11/24/2011 17:11
## 1.000e+00 3.600e+01
## InvoiceDate11/24/2011 19:30 InvoiceDate11/24/2011 19:59
## -2.200e+01 -2.300e+01
## InvoiceDate11/25/2011 13:09 InvoiceDate11/25/2011 13:27
## -1.800e+01 -4.000e+00
## InvoiceDate11/25/2011 16:13 InvoiceDate11/25/2011 8:55
## -2.200e+01 -1.200e+01
## InvoiceDate11/27/2011 12:26 InvoiceDate11/27/2011 12:52
## -2.100e+01 -2.300e+01
## InvoiceDate11/27/2011 15:18 InvoiceDate11/27/2011 15:38
## -2.200e+01 -2.300e+01
## InvoiceDate11/27/2011 15:59 InvoiceDate11/28/2011 10:31
## -2.200e+01 -1.200e+01
## InvoiceDate11/28/2011 10:35 InvoiceDate11/28/2011 11:33
## -1.800e+01 4.807e-13
## InvoiceDate11/28/2011 12:44 InvoiceDate11/28/2011 12:45
## -2.300e+01 -2.200e+01
## InvoiceDate11/28/2011 13:06 InvoiceDate11/28/2011 13:58
## -2.300e+01 -2.000e+01
## InvoiceDate11/28/2011 14:06 InvoiceDate11/28/2011 15:34
## -2.200e+01 -2.100e+01
## InvoiceDate11/29/2011 10:57 InvoiceDate11/29/2011 15:23
## -2.300e+01 -2.300e+01
## InvoiceDate11/29/2011 17:52 InvoiceDate11/29/2011 8:40
## -2.300e+01 -2.000e+01
## InvoiceDate11/29/2011 9:47 InvoiceDate11/29/2011 9:50
## 8.822e-13 -2.000e+01
## InvoiceDate11/3/2011 15:27 InvoiceDate11/3/2011 16:37
## -2.300e+01 -1.200e+01
## InvoiceDate11/3/2011 9:17 InvoiceDate11/30/2011 11:17
## 1.000e+00 -2.300e+01
## InvoiceDate11/30/2011 8:44 InvoiceDate11/30/2011 9:00
## -1.400e+01 -1.800e+01
## InvoiceDate11/4/2011 13:15 InvoiceDate11/4/2011 14:07
## -1.200e+01 -1.400e+01
## InvoiceDate11/4/2011 14:19 InvoiceDate11/4/2011 15:08
## 2.900e+01 -2.300e+01
## InvoiceDate11/4/2011 15:29 InvoiceDate11/4/2011 15:50
## -2.200e+01 -2.100e+01
## InvoiceDate11/4/2011 9:05 InvoiceDate11/6/2011 12:26
## -2.000e+00 -4.000e+00
## InvoiceDate11/6/2011 12:31 InvoiceDate11/6/2011 12:50
## -2.300e+01 -2.300e+01
## InvoiceDate11/6/2011 14:33 InvoiceDate11/6/2011 14:45
## -2.300e+01 -2.100e+01
## InvoiceDate11/7/2011 10:43 InvoiceDate11/7/2011 12:34
## -2.100e+01 -2.000e+01
## InvoiceDate11/8/2011 12:58 InvoiceDate11/8/2011 13:10
## -2.100e+01 -2.000e+01
## InvoiceDate11/8/2011 13:22 InvoiceDate11/8/2011 15:45
## -2.000e+01 4.800e+01
## InvoiceDate11/9/2011 11:04 InvoiceDate11/9/2011 14:11
## -2.000e+01 -2.300e+01
## InvoiceDate11/9/2011 15:02 InvoiceDate11/9/2011 16:03
## -2.300e+01 -1.400e+01
## InvoiceDate11/9/2011 16:28 InvoiceDate11/9/2011 17:47
## 1.200e+01 5.168e-13
## InvoiceDate11/9/2011 8:50 InvoiceDate12/1/2010 11:57
## -1.200e+01 -2.100e+01
## InvoiceDate12/1/2010 12:31 InvoiceDate12/1/2010 14:38
## -2.300e+01 -2.200e+01
## InvoiceDate12/1/2011 13:08 InvoiceDate12/1/2011 13:12
## -2.300e+01 -4.000e+00
## InvoiceDate12/1/2011 13:19 InvoiceDate12/1/2011 13:28
## -1.900e+01 -2.200e+01
## InvoiceDate12/1/2011 14:34 InvoiceDate12/1/2011 14:38
## -4.000e+00 -1.300e+01
## InvoiceDate12/1/2011 15:24 InvoiceDate12/1/2011 15:28
## -1.800e+01 -1.400e+01
## InvoiceDate12/1/2011 16:37 InvoiceDate12/10/2010 12:14
## -2.300e+01 -2.300e+01
## InvoiceDate12/10/2010 13:48 InvoiceDate12/10/2010 14:54
## -2.100e+01 -2.200e+01
## InvoiceDate12/10/2010 17:14 InvoiceDate12/12/2010 11:06
## -2.200e+01 -2.300e+01
## InvoiceDate12/12/2010 16:05 InvoiceDate12/13/2010 15:12
## -2.300e+01 -1.200e+01
## InvoiceDate12/13/2010 15:36 InvoiceDate12/13/2010 9:39
## -1.800e+01 -1.200e+01
## InvoiceDate12/14/2010 11:39 InvoiceDate12/14/2010 11:43
## -1.800e+01 -1.600e+01
## InvoiceDate12/14/2010 12:06 InvoiceDate12/14/2010 13:03
## -1.900e+01 -1.200e+01
## InvoiceDate12/14/2010 13:35 InvoiceDate12/14/2010 14:02
## -2.100e+01 -2.200e+01
## InvoiceDate12/14/2010 14:40 InvoiceDate12/14/2010 14:42
## -2.000e+01 -1.200e+01
## InvoiceDate12/14/2010 16:07 InvoiceDate12/15/2010 11:26
## -1.600e+01 -2.200e+01
## InvoiceDate12/15/2010 11:53 InvoiceDate12/15/2010 16:21
## 5.520e+02 -4.000e+00
## InvoiceDate12/15/2010 9:09 InvoiceDate12/16/2010 13:44
## 3.845e-13 4.019e-13
## InvoiceDate12/17/2010 15:39 InvoiceDate12/19/2010 14:41
## 4.315e-13 -2.300e+01
## InvoiceDate12/2/2010 10:54 InvoiceDate12/2/2010 11:35
## -1.800e+01 -1.800e+01
## InvoiceDate12/2/2010 13:08 InvoiceDate12/2/2011 13:37
## -1.800e+01 4.000e+01
## InvoiceDate12/2/2011 14:46 InvoiceDate12/2/2011 16:07
## -1.200e+01 -2.150e+01
## InvoiceDate12/20/2010 12:05 InvoiceDate12/20/2010 14:51
## -4.000e+00 -1.303e-12
## InvoiceDate12/20/2010 15:22 InvoiceDate12/21/2010 10:26
## -2.300e+01 -2.300e+01
## InvoiceDate12/21/2010 16:06 InvoiceDate12/21/2010 16:08
## -2.300e+01 -2.300e+01
## InvoiceDate12/23/2010 11:24 InvoiceDate12/23/2010 14:35
## -1.800e+01 -1.200e+01
## InvoiceDate12/23/2010 14:40 InvoiceDate12/3/2010 11:19
## -2.300e+01 -2.300e+01
## InvoiceDate12/3/2010 12:24 InvoiceDate12/3/2010 13:40
## -2.300e+01 8.000e+00
## InvoiceDate12/3/2010 14:04 InvoiceDate12/3/2010 14:26
## -2.100e+01 -4.000e+00
## InvoiceDate12/3/2010 14:54 InvoiceDate12/4/2011 11:00
## -2.300e+01 -2.300e+01
## InvoiceDate12/4/2011 12:17 InvoiceDate12/4/2011 13:15
## -2.200e+01 -2.000e+01
## InvoiceDate12/4/2011 14:55 InvoiceDate12/4/2011 15:18
## -2.300e+01 -1.200e+01
## InvoiceDate12/5/2010 13:05 InvoiceDate12/5/2010 14:19
## -2.300e+01 5.325e-13
## InvoiceDate12/5/2010 14:25 InvoiceDate12/5/2010 16:24
## -2.300e+01 -1.800e+01
## InvoiceDate12/5/2011 10:00 InvoiceDate12/5/2011 11:05
## 1.989e-13 -2.200e+01
## InvoiceDate12/5/2011 12:51 InvoiceDate12/5/2011 14:06
## -2.300e+01 7.200e+01
## InvoiceDate12/5/2011 14:29 InvoiceDate12/5/2011 14:49
## -2.100e+01 -2.000e+01
## InvoiceDate12/5/2011 17:17 InvoiceDate12/6/2010 11:26
## -2.300e+01 -1.800e+01
## InvoiceDate12/6/2010 12:55 InvoiceDate12/6/2010 13:22
## -1.200e+01 -2.200e+01
## InvoiceDate12/6/2010 13:58 InvoiceDate12/6/2010 14:31
## -2.200e+01 -2.300e+01
## InvoiceDate12/6/2010 14:51 InvoiceDate12/6/2011 11:58
## -2.300e+01 -2.300e+01
## InvoiceDate12/6/2011 12:15 InvoiceDate12/6/2011 16:02
## 1.000e+00 -2.200e+01
## InvoiceDate12/6/2011 16:34 InvoiceDate12/7/2011 10:09
## -1.200e+01 2.423e-13
## InvoiceDate12/7/2011 12:34 InvoiceDate12/7/2011 12:48
## -1.800e+01 -1.200e+01
## InvoiceDate12/7/2011 12:55 InvoiceDate12/7/2011 14:12
## 4.786e-13 -2.150e+01
## InvoiceDate12/7/2011 14:39 InvoiceDate12/7/2011 14:43
## -1.200e+01 -2.300e+01
## InvoiceDate12/7/2011 15:43 InvoiceDate12/7/2011 16:47
## -1.200e+01 5.320e-13
## InvoiceDate12/7/2011 16:56 InvoiceDate12/7/2011 17:05
## -2.200e+01 -2.000e+01
## InvoiceDate12/8/2010 10:13 InvoiceDate12/8/2010 10:36
## -1.200e+01 -1.800e+01
## InvoiceDate12/8/2010 14:22 InvoiceDate12/8/2010 16:49
## 1.984e-13 -1.600e+01
## InvoiceDate12/8/2011 11:53 InvoiceDate12/8/2011 13:47
## -1.800e+01 -2.000e+01
## InvoiceDate12/8/2011 13:50 InvoiceDate12/8/2011 15:54
## -2.300e+01 -1.000e+01
## InvoiceDate12/8/2011 16:22 InvoiceDate12/8/2011 18:51
## 2.400e+01 -7.200e+01
## InvoiceDate12/9/2010 10:16 InvoiceDate12/9/2010 12:17
## -1.200e+01 -2.200e+01
## InvoiceDate12/9/2010 14:05 InvoiceDate12/9/2010 16:53
## -2.100e+01 -2.100e+01
## InvoiceDate12/9/2011 11:26 InvoiceDate2/1/2011 12:29
## -1.800e+01 -1.200e+01
## InvoiceDate2/1/2011 8:23 InvoiceDate2/10/2011 12:32
## -1.800e+01 -1.800e+01
## InvoiceDate2/10/2011 15:24 InvoiceDate2/11/2011 12:36
## -8.000e+00 -2.100e+01
## InvoiceDate2/13/2011 12:03 InvoiceDate2/14/2011 10:10
## -2.000e+01 -1.200e+01
## InvoiceDate2/14/2011 14:39 InvoiceDate2/15/2011 17:02
## -1.200e+01 -2.200e+01
## InvoiceDate2/15/2011 9:20 InvoiceDate2/16/2011 11:03
## -2.200e+01 -2.300e+01
## InvoiceDate2/16/2011 11:45 InvoiceDate2/17/2011 12:21
## 1.054e-12 1.397e-13
## InvoiceDate2/17/2011 12:29 InvoiceDate2/17/2011 12:33
## -1.600e+01 -2.200e+01
## InvoiceDate2/17/2011 14:36 InvoiceDate2/2/2011 9:06
## 6.930e-13 -1.500e+01
## InvoiceDate2/20/2011 10:56 InvoiceDate2/21/2011 10:28
## -2.200e+01 2.400e+01
## InvoiceDate2/21/2011 12:53 InvoiceDate2/22/2011 12:13
## -1.800e+01 -4.000e+00
## InvoiceDate2/22/2011 13:20 InvoiceDate2/22/2011 15:09
## -2.200e+01 2.400e+01
## InvoiceDate2/22/2011 15:46 InvoiceDate2/23/2011 10:57
## 1.000e+00 -2.300e+01
## InvoiceDate2/23/2011 12:03 InvoiceDate2/23/2011 12:27
## -2.250e+01 -1.900e+01
## InvoiceDate2/23/2011 13:45 InvoiceDate2/23/2011 15:53
## -1.800e+01 -1.800e+01
## InvoiceDate2/24/2011 12:09 InvoiceDate2/24/2011 14:15
## -1.800e+01 1.600e+01
## InvoiceDate2/24/2011 14:32 InvoiceDate2/25/2011 10:29
## -2.000e+01 -1.600e+01
## InvoiceDate2/25/2011 12:48 InvoiceDate2/25/2011 14:11
## -1.200e+01 -1.200e+01
## InvoiceDate2/3/2011 11:49 InvoiceDate2/3/2011 12:44
## -1.200e+01 -2.300e+01
## InvoiceDate2/3/2011 13:26 InvoiceDate2/3/2011 9:04
## -1.600e+01 -1.800e+01
## InvoiceDate2/4/2011 14:51 InvoiceDate2/7/2011 11:56
## -1.800e+01 -2.300e+01
## InvoiceDate2/7/2011 12:27 InvoiceDate2/7/2011 14:51
## 8.745e-13 -2.300e+01
## InvoiceDate2/8/2011 10:32 InvoiceDate2/8/2011 11:36
## -2.200e+01 -2.200e+01
## InvoiceDate2/9/2011 11:21 InvoiceDate3/1/2011 14:26
## 2.600e+01 -1.200e+01
## InvoiceDate3/1/2011 8:35 InvoiceDate3/10/2011 19:05
## -1.200e+01 -1.200e+01
## InvoiceDate3/11/2011 13:13 InvoiceDate3/13/2011 10:48
## -1.600e+01 -1.800e+01
## InvoiceDate3/14/2011 12:28 InvoiceDate3/14/2011 13:04
## -1.800e+01 -2.200e+01
## InvoiceDate3/14/2011 13:56 InvoiceDate3/14/2011 15:13
## -1.200e+01 -2.300e+01
## InvoiceDate3/15/2011 10:53 InvoiceDate3/15/2011 11:45
## -1.200e+01 -2.300e+01
## InvoiceDate3/15/2011 15:31 InvoiceDate3/15/2011 15:33
## -2.000e+01 -1.200e+01
## InvoiceDate3/16/2011 10:17 InvoiceDate3/16/2011 11:52
## -1.800e+01 -2.100e+01
## InvoiceDate3/16/2011 14:57 InvoiceDate3/16/2011 16:38
## -1.500e+01 -2.200e+01
## InvoiceDate3/17/2011 13:13 InvoiceDate3/17/2011 16:38
## -2.300e+01 -1.400e+01
## InvoiceDate3/17/2011 18:27 InvoiceDate3/17/2011 20:12
## 6.000e+00 -2.150e+01
## InvoiceDate3/17/2011 9:49 InvoiceDate3/18/2011 11:24
## -2.200e+01 -2.200e+01
## InvoiceDate3/18/2011 11:30 InvoiceDate3/18/2011 12:15
## -1.800e+01 -7.400e+01
## InvoiceDate3/2/2011 11:43 InvoiceDate3/2/2011 17:33
## 1.000e+00 -2.200e+01
## InvoiceDate3/20/2011 13:33 InvoiceDate3/21/2011 12:42
## -1.100e+01 -2.200e+01
## InvoiceDate3/21/2011 16:32 InvoiceDate3/22/2011 12:15
## -2.300e+01 -2.100e+01
## InvoiceDate3/22/2011 12:27 InvoiceDate3/23/2011 10:25
## -2.300e+01 -2.300e+01
## InvoiceDate3/23/2011 12:24 InvoiceDate3/23/2011 13:39
## -2.300e+01 3.982e-13
## InvoiceDate3/23/2011 9:42 InvoiceDate3/24/2011 13:04
## 2.999e-13 -2.300e+01
## InvoiceDate3/24/2011 14:07 InvoiceDate3/24/2011 16:23
## -7.300e+01 -6.000e+00
## InvoiceDate3/24/2011 8:44 InvoiceDate3/24/2011 9:50
## -1.200e+01 -2.100e+01
## InvoiceDate3/25/2011 10:52 InvoiceDate3/25/2011 11:41
## -1.200e+01 -1.200e+01
## InvoiceDate3/25/2011 14:01 InvoiceDate3/27/2011 13:56
## -1.800e+01 -2.300e+01
## InvoiceDate3/27/2011 16:08 InvoiceDate3/28/2011 12:52
## -2.300e+01 -2.300e+01
## InvoiceDate3/29/2011 12:57 InvoiceDate3/29/2011 15:44
## -1.200e+01 -1.800e+01
## InvoiceDate3/3/2011 12:06 InvoiceDate3/30/2011 12:12
## 1.541e-13 -2.100e+01
## InvoiceDate3/30/2011 13:26 InvoiceDate3/30/2011 13:28
## -2.300e+01 4.532e-13
## InvoiceDate3/4/2011 14:02 InvoiceDate3/4/2011 14:13
## -1.200e+01 -1.200e+01
## InvoiceDate3/6/2011 14:44 InvoiceDate3/6/2011 15:17
## -2.300e+01 -2.300e+01
## InvoiceDate3/7/2011 10:52 InvoiceDate3/7/2011 13:33
## -1.400e+01 -2.500e+01
## InvoiceDate3/7/2011 14:51 InvoiceDate3/7/2011 17:23
## -1.700e+01 -2.000e+01
## InvoiceDate3/7/2011 17:52 InvoiceDate3/8/2011 10:04
## -2.250e+01 3.381e-13
## InvoiceDate3/8/2011 13:54 InvoiceDate3/8/2011 14:12
## -2.000e+01 -2.100e+01
## InvoiceDate3/8/2011 14:44 InvoiceDate3/8/2011 16:48
## -1.800e+01 2.400e+01
## InvoiceDate3/8/2011 9:45 InvoiceDate3/9/2011 10:51
## -1.600e+01 -2.000e+01
## InvoiceDate3/9/2011 11:05 InvoiceDate3/9/2011 12:04
## -2.300e+01 1.318e-13
## InvoiceDate3/9/2011 13:56 InvoiceDate4/1/2011 11:50
## -2.200e+01 -1.200e+01
## InvoiceDate4/1/2011 13:20 InvoiceDate4/1/2011 14:58
## -1.200e+01 -1.800e+01
## InvoiceDate4/10/2011 12:36 InvoiceDate4/10/2011 13:21
## -1.200e+01 -2.300e+01
## InvoiceDate4/11/2011 10:14 InvoiceDate4/11/2011 13:22
## -1.600e+01 1.000e+00
## InvoiceDate4/11/2011 14:07 InvoiceDate4/12/2011 10:38
## -2.000e+01 -1.800e+01
## InvoiceDate4/12/2011 13:24 InvoiceDate4/12/2011 17:12
## 1.200e+01 -2.300e+01
## InvoiceDate4/13/2011 15:57 InvoiceDate4/14/2011 10:54
## -1.200e+01 -1.200e+01
## InvoiceDate4/14/2011 13:17 InvoiceDate4/14/2011 14:14
## -2.100e+01 -2.100e+01
## InvoiceDate4/14/2011 16:26 InvoiceDate4/14/2011 19:15
## -1.150e+01 -2.300e+01
## InvoiceDate4/15/2011 14:21 InvoiceDate4/17/2011 10:27
## -2.200e+01 -1.200e+01
## InvoiceDate4/18/2011 12:17 InvoiceDate4/19/2011 13:09
## -1.800e+01 -1.200e+01
## InvoiceDate4/19/2011 13:41 InvoiceDate4/19/2011 16:52
## -2.200e+01 -2.200e+01
## InvoiceDate4/20/2011 13:58 InvoiceDate4/20/2011 17:00
## -1.200e+01 -1.200e+01
## InvoiceDate4/21/2011 12:00 InvoiceDate4/21/2011 12:12
## -2.200e+01 -2.000e+01
## InvoiceDate4/21/2011 14:37 InvoiceDate4/21/2011 19:05
## -1.900e+01 -2.200e+01
## InvoiceDate4/26/2011 11:04 InvoiceDate4/26/2011 9:44
## 1.000e+00 -1.850e+01
## InvoiceDate4/27/2011 13:06 InvoiceDate4/27/2011 14:27
## -2.200e+01 -4.000e+00
## InvoiceDate4/27/2011 14:58 InvoiceDate4/28/2011 10:20
## -1.400e+01 3.722e-13
## InvoiceDate4/28/2011 13:35 InvoiceDate4/28/2011 15:26
## -1.200e+01 -2.200e+01
## InvoiceDate4/4/2011 10:40 InvoiceDate4/4/2011 12:37
## -2.300e+01 1.000e+00
## InvoiceDate4/5/2011 11:44 InvoiceDate4/5/2011 9:32
## -1.800e+01 -1.600e+01
## InvoiceDate4/6/2011 10:20 InvoiceDate4/6/2011 11:34
## -1.200e+01 -2.300e+01
## InvoiceDate4/6/2011 13:18 InvoiceDate4/7/2011 10:10
## -2.200e+01 -1.600e+01
## InvoiceDate4/7/2011 12:29 InvoiceDate4/7/2011 18:03
## -2.300e+01 -2.200e+01
## InvoiceDate4/8/2011 11:33 InvoiceDate4/8/2011 13:14
## -4.000e+00 -2.100e+01
## InvoiceDate5/1/2011 11:58 InvoiceDate5/10/2011 12:53
## -2.600e+01 -2.300e+01
## InvoiceDate5/10/2011 9:41 InvoiceDate5/11/2011 14:25
## -1.800e+01 -2.100e+01
## InvoiceDate5/11/2011 14:52 InvoiceDate5/11/2011 15:08
## -3.000e+01 -2.150e+01
## InvoiceDate5/12/2011 12:57 InvoiceDate5/12/2011 13:37
## -1.900e+01 -1.200e+01
## InvoiceDate5/12/2011 13:58 InvoiceDate5/12/2011 16:29
## -2.000e+01 -1.200e+01
## InvoiceDate5/13/2011 10:02 InvoiceDate5/13/2011 10:09
## -1.800e+01 -1.800e+01
## InvoiceDate5/13/2011 10:22 InvoiceDate5/13/2011 10:44
## 3.216e-13 -1.200e+01
## InvoiceDate5/13/2011 15:24 InvoiceDate5/15/2011 11:29
## -1.200e+01 -1.200e+01
## InvoiceDate5/15/2011 12:21 InvoiceDate5/15/2011 12:35
## -2.050e+01 -2.300e+01
## InvoiceDate5/15/2011 13:14 InvoiceDate5/15/2011 13:37
## -2.200e+01 -2.100e+01
## InvoiceDate5/15/2011 16:02 InvoiceDate5/16/2011 10:41
## -1.200e+01 -2.000e+01
## InvoiceDate5/16/2011 10:48 InvoiceDate5/16/2011 13:35
## -1.800e+01 -2.300e+01
## InvoiceDate5/17/2011 10:08 InvoiceDate5/17/2011 10:23
## -1.400e+01 7.476e-13
## InvoiceDate5/17/2011 11:07 InvoiceDate5/17/2011 11:28
## 3.600e+01 -1.200e+01
## InvoiceDate5/17/2011 12:47 InvoiceDate5/17/2011 14:46
## -2.100e+01 -2.200e+01
## InvoiceDate5/17/2011 15:26 InvoiceDate5/17/2011 8:37
## -2.100e+01 -1.800e+01
## InvoiceDate5/18/2011 12:21 InvoiceDate5/18/2011 13:00
## -2.200e+01 3.925e-13
## InvoiceDate5/18/2011 13:56 InvoiceDate5/18/2011 16:56
## -2.200e+01 -4.000e+00
## InvoiceDate5/18/2011 9:59 InvoiceDate5/19/2011 13:35
## 4.740e-13 -2.300e+01
## InvoiceDate5/19/2011 17:22 InvoiceDate5/20/2011 10:37
## -2.200e+01 -2.200e+01
## InvoiceDate5/22/2011 10:39 InvoiceDate5/22/2011 11:52
## -1.800e+01 -1.200e+01
## InvoiceDate5/22/2011 12:51 InvoiceDate5/22/2011 13:01
## -1.200e+01 -2.300e+01
## InvoiceDate5/22/2011 14:03 InvoiceDate5/22/2011 14:05
## -1.400e+01 -2.100e+01
## InvoiceDate5/22/2011 15:44 InvoiceDate5/23/2011 13:17
## -2.300e+01 -4.000e+00
## InvoiceDate5/23/2011 9:48 InvoiceDate5/24/2011 10:33
## 3.334e-13 -1.800e+01
## InvoiceDate5/24/2011 16:25 InvoiceDate5/24/2011 9:10
## -1.600e+01 -1.200e+01
## InvoiceDate5/25/2011 10:12 InvoiceDate5/25/2011 10:35
## -2.300e+01 -1.200e+01
## InvoiceDate5/25/2011 11:12 InvoiceDate5/25/2011 12:39
## -2.000e+01 7.600e+01
## InvoiceDate5/25/2011 12:54 InvoiceDate5/25/2011 13:36
## -1.800e+01 -1.200e+01
## InvoiceDate5/25/2011 15:18 InvoiceDate5/25/2011 17:12
## -1.200e+01 -2.100e+01
## InvoiceDate5/25/2011 17:31 InvoiceDate5/26/2011 19:56
## -2.200e+01 -3.600e+01
## InvoiceDate5/27/2011 13:30 InvoiceDate5/27/2011 13:32
## 2.400e+01 -1.800e+01
## InvoiceDate5/29/2011 12:35 InvoiceDate5/3/2011 15:23
## -1.900e+01 -2.200e+01
## InvoiceDate5/31/2011 13:08 InvoiceDate5/4/2011 14:03
## -2.100e+01 -2.200e+01
## InvoiceDate5/5/2011 14:55 InvoiceDate5/5/2011 17:26
## -2.200e+01 -2.100e+01
## InvoiceDate5/5/2011 9:18 InvoiceDate5/6/2011 10:10
## 1.000e+00 -2.200e+01
## InvoiceDate5/6/2011 10:43 InvoiceDate5/6/2011 8:08
## -2.100e+01 1.600e+01
## InvoiceDate5/8/2011 11:38 InvoiceDate5/8/2011 12:00
## -8.000e+00 -2.100e+01
## InvoiceDate5/9/2011 12:40 InvoiceDate5/9/2011 9:15
## -2.300e+01 -2.200e+01
## InvoiceDate6/10/2011 10:26 InvoiceDate6/10/2011 12:19
## -1.200e+01 4.800e+01
## InvoiceDate6/12/2011 12:00 InvoiceDate6/12/2011 12:20
## -2.300e+01 -1.000e+01
## InvoiceDate6/12/2011 13:04 InvoiceDate6/12/2011 13:17
## -1.800e+01 -2.200e+01
## InvoiceDate6/12/2011 14:48 InvoiceDate6/12/2011 15:57
## 7.200e+01 -2.200e+01
## InvoiceDate6/13/2011 13:13 InvoiceDate6/13/2011 14:13
## -1.200e+01 -2.000e+01
## InvoiceDate6/14/2011 10:00 InvoiceDate6/15/2011 12:21
## -2.200e+01 -2.100e+01
## InvoiceDate6/15/2011 13:05 InvoiceDate6/15/2011 13:49
## -2.300e+01 -2.600e+01
## InvoiceDate6/15/2011 14:26 InvoiceDate6/15/2011 16:42
## -2.300e+01 -1.200e+01
## InvoiceDate6/16/2011 11:24 InvoiceDate6/17/2011 12:30
## 6.054e-13 -8.000e+00
## InvoiceDate6/17/2011 13:14 InvoiceDate6/17/2011 13:57
## -1.800e+01 3.808e-13
## InvoiceDate6/17/2011 14:44 InvoiceDate6/17/2011 9:12
## -2.000e+01 2.400e+01
## InvoiceDate6/19/2011 10:55 InvoiceDate6/19/2011 15:36
## -2.300e+01 -2.100e+01
## InvoiceDate6/19/2011 16:02 InvoiceDate6/20/2011 13:08
## -2.200e+01 -1.900e+01
## InvoiceDate6/20/2011 14:36 InvoiceDate6/20/2011 16:52
## -2.200e+01 -2.700e+01
## InvoiceDate6/21/2011 12:35 InvoiceDate6/21/2011 14:15
## -1.200e+01 -2.300e+01
## InvoiceDate6/21/2011 15:41 InvoiceDate6/22/2011 11:46
## -2.300e+01 4.036e-13
## InvoiceDate6/22/2011 14:01 InvoiceDate6/23/2011 13:37
## -4.000e+00 -1.800e+01
## InvoiceDate6/23/2011 17:35 InvoiceDate6/24/2011 10:31
## -2.300e+01 3.355e-13
## InvoiceDate6/26/2011 13:24 InvoiceDate6/27/2011 10:16
## -2.300e+01 -1.400e+01
## InvoiceDate6/27/2011 13:00 InvoiceDate6/28/2011 11:22
## -2.300e+01 -1.200e+01
## InvoiceDate6/28/2011 15:31 InvoiceDate6/28/2011 8:45
## -2.100e+01 -1.200e+01
## InvoiceDate6/3/2011 8:54 InvoiceDate6/30/2011 13:17
## -1.800e+01 -2.300e+01
## InvoiceDate6/5/2011 14:48 InvoiceDate6/6/2011 11:37
## -2.500e+01 -1.200e+01
## InvoiceDate6/6/2011 13:46 InvoiceDate6/7/2011 12:01
## -2.300e+01 3.718e-13
## InvoiceDate6/7/2011 13:44 InvoiceDate6/7/2011 13:56
## -2.300e+01 -2.200e+01
## InvoiceDate6/8/2011 10:45 InvoiceDate6/8/2011 12:44
## 1.200e+01 -2.100e+01
## InvoiceDate6/8/2011 16:15 InvoiceDate6/8/2011 8:46
## -2.000e+01 -2.200e+01
## InvoiceDate6/9/2011 10:06 InvoiceDate6/9/2011 12:02
## 2.400e+01 -1.200e+01
## InvoiceDate6/9/2011 14:18 InvoiceDate7/1/2011 12:11
## -2.200e+01 -2.500e+01
## InvoiceDate7/10/2011 11:24 InvoiceDate7/11/2011 12:31
## -1.800e+01 -2.300e+01
## InvoiceDate7/11/2011 14:04 InvoiceDate7/11/2011 17:07
## -6.000e+00 -2.000e+01
## InvoiceDate7/12/2011 14:48 InvoiceDate7/12/2011 9:11
## -2.000e+01 1.760e+02
## InvoiceDate7/13/2011 11:44 InvoiceDate7/13/2011 13:20
## -2.000e+01 1.200e+01
## InvoiceDate7/14/2011 12:12 InvoiceDate7/14/2011 13:00
## 2.400e+01 -2.200e+01
## InvoiceDate7/14/2011 14:08 InvoiceDate7/14/2011 15:01
## 8.000e+00 -1.150e+01
## InvoiceDate7/14/2011 20:01 InvoiceDate7/15/2011 10:21
## -1.800e+01 -1.800e+01
## InvoiceDate7/15/2011 13:10 InvoiceDate7/15/2011 16:06
## -1.400e+01 -1.500e+01
## InvoiceDate7/17/2011 14:59 InvoiceDate7/19/2011 11:03
## -2.000e+01 -2.000e+01
## InvoiceDate7/19/2011 12:10 InvoiceDate7/19/2011 13:24
## -1.200e+01 -2.700e+01
## InvoiceDate7/19/2011 15:23 InvoiceDate7/19/2011 9:08
## 3.600e+01 2.400e+01
## InvoiceDate7/19/2011 9:29 InvoiceDate7/20/2011 12:38
## -1.200e+01 -2.300e+01
## InvoiceDate7/20/2011 12:58 InvoiceDate7/20/2011 8:59
## -2.300e+01 -2.100e+01
## InvoiceDate7/21/2011 13:37 InvoiceDate7/21/2011 16:20
## -2.300e+01 -1.200e+01
## InvoiceDate7/21/2011 16:28 InvoiceDate7/22/2011 13:20
## 8.000e+00 1.200e+01
## InvoiceDate7/22/2011 13:29 InvoiceDate7/22/2011 15:02
## -1.600e+01 -1.400e+01
## InvoiceDate7/22/2011 16:04 InvoiceDate7/24/2011 12:05
## -1.200e+01 5.532e-13
## InvoiceDate7/24/2011 15:39 InvoiceDate7/25/2011 12:09
## -1.200e+01 -1.400e+01
## InvoiceDate7/25/2011 12:22 InvoiceDate7/25/2011 13:06
## -1.400e+01 -1.200e+01
## InvoiceDate7/25/2011 13:54 InvoiceDate7/26/2011 11:38
## 9.373e-13 -1.800e+01
## InvoiceDate7/26/2011 12:28 InvoiceDate7/26/2011 13:57
## -2.300e+01 -2.300e+01
## InvoiceDate7/26/2011 15:29 InvoiceDate7/27/2011 13:17
## -8.000e+00 -1.400e+01
## InvoiceDate7/28/2011 12:29 InvoiceDate7/28/2011 13:28
## -2.200e+01 2.588e-13
## InvoiceDate7/29/2011 17:28 InvoiceDate7/3/2011 12:38
## -1.200e+01 -1.800e+01
## InvoiceDate7/3/2011 13:33 InvoiceDate7/31/2011 10:38
## -2.300e+01 -2.300e+01
## InvoiceDate7/31/2011 12:02 InvoiceDate7/31/2011 15:00
## -2.300e+01 -2.300e+01
## InvoiceDate7/4/2011 12:58 InvoiceDate7/4/2011 13:50
## 9.600e+01 -1.800e+01
## InvoiceDate7/4/2011 14:07 InvoiceDate7/5/2011 13:06
## -4.000e+00 2.400e+01
## InvoiceDate7/6/2011 14:59 InvoiceDate7/7/2011 12:47
## -2.300e+01 -2.100e+01
## InvoiceDate7/7/2011 18:02 InvoiceDate7/7/2011 18:29
## -1.200e+01 -1.200e+01
## InvoiceDate7/7/2011 19:14 InvoiceDate7/8/2011 11:55
## -1.200e+01 -2.100e+01
## InvoiceDate7/8/2011 12:14 InvoiceDate7/8/2011 13:26
## 2.954e-13 7.600e+01
## InvoiceDate7/8/2011 15:16 InvoiceDate7/8/2011 15:29
## -2.300e+01 -1.800e+01
## InvoiceDate7/8/2011 8:45 InvoiceDate8/1/2011 10:23
## -1.400e+01 -1.800e+01
## InvoiceDate8/1/2011 12:28 InvoiceDate8/1/2011 17:37
## -8.000e+00 -2.000e+01
## InvoiceDate8/10/2011 13:19 InvoiceDate8/10/2011 13:25
## 3.963e-13 -1.400e+01
## InvoiceDate8/11/2011 12:44 InvoiceDate8/11/2011 13:34
## 1.000e+00 -1.500e+01
## InvoiceDate8/11/2011 14:53 InvoiceDate8/11/2011 15:25
## 1.600e+01 -1.200e+01
## InvoiceDate8/11/2011 16:11 InvoiceDate8/12/2011 9:57
## 1.200e+01 -2.200e+01
## InvoiceDate8/14/2011 10:49 InvoiceDate8/15/2011 13:07
## -2.200e+01 -2.300e+01
## InvoiceDate8/15/2011 13:48 InvoiceDate8/15/2011 14:32
## -1.500e+01 -2.000e+01
## InvoiceDate8/16/2011 10:50 InvoiceDate8/17/2011 10:59
## -1.200e+01 -1.700e+01
## InvoiceDate8/17/2011 14:22 InvoiceDate8/18/2011 12:41
## -1.200e+01 -1.400e+01
## InvoiceDate8/18/2011 19:13 InvoiceDate8/19/2011 10:18
## -2.250e+01 -1.200e+01
## InvoiceDate8/19/2011 14:57 InvoiceDate8/2/2011 10:19
## -2.000e+01 -1.200e+01
## InvoiceDate8/2/2011 10:24 InvoiceDate8/21/2011 11:15
## 1.200e+01 -1.900e+01
## InvoiceDate8/21/2011 12:36 InvoiceDate8/22/2011 10:08
## -2.100e+01 6.000e+00
## InvoiceDate8/22/2011 14:13 InvoiceDate8/22/2011 15:05
## -2.100e+01 -1.200e+01
## InvoiceDate8/23/2011 15:24 InvoiceDate8/24/2011 12:04
## -2.200e+01 -1.800e+01
## InvoiceDate8/24/2011 13:22 InvoiceDate8/24/2011 14:54
## -2.200e+01 -1.200e+01
## InvoiceDate8/24/2011 14:59 InvoiceDate8/24/2011 15:08
## 2.400e+01 -1.400e+01
## InvoiceDate8/24/2011 9:56 InvoiceDate8/26/2011 9:37
## -1.200e+01 -2.100e+01
## InvoiceDate8/28/2011 12:28 InvoiceDate8/28/2011 13:32
## -2.300e+01 -1.800e+01
## InvoiceDate8/28/2011 16:09 InvoiceDate8/3/2011 10:04
## -1.200e+01 -1.200e+01
## InvoiceDate8/3/2011 12:12 InvoiceDate8/3/2011 13:39
## -1.900e+01 -2.300e+01
## InvoiceDate8/30/2011 11:32 InvoiceDate8/31/2011 16:28
## 3.565e-13 6.000e+00
## InvoiceDate8/31/2011 17:12 InvoiceDate8/4/2011 10:38
## -2.200e+01 -1.400e+01
## InvoiceDate8/4/2011 16:31 InvoiceDate8/4/2011 17:19
## -1.600e+01 -1.200e+01
## InvoiceDate8/4/2011 20:01 InvoiceDate8/5/2011 15:02
## -1.500e+01 -1.800e+01
## InvoiceDate8/5/2011 16:43 InvoiceDate8/8/2011 14:53
## -2.200e+01 -2.200e+01
## InvoiceDate8/9/2011 13:22 InvoiceDate8/9/2011 13:50
## 1.200e+01 -1.200e+01
## InvoiceDate8/9/2011 15:12 InvoiceDate8/9/2011 9:26
## -2.200e+01 -2.000e+01
## InvoiceDate9/1/2011 12:16 InvoiceDate9/1/2011 14:42
## -1.800e+01 -2.100e+01
## InvoiceDate9/1/2011 16:30 InvoiceDate9/1/2011 16:50
## -2.300e+01 -1.800e+01
## InvoiceDate9/1/2011 19:08 InvoiceDate9/1/2011 19:11
## -1.800e+01 -2.200e+01
## InvoiceDate9/11/2011 12:16 InvoiceDate9/11/2011 14:01
## -1.400e+01 -1.200e+01
## InvoiceDate9/11/2011 14:51 InvoiceDate9/11/2011 15:11
## 5.833e-13 -2.300e+01
## InvoiceDate9/12/2011 13:16 InvoiceDate9/12/2011 15:01
## -2.300e+01 -1.800e+01
## InvoiceDate9/12/2011 16:12 InvoiceDate9/12/2011 16:14
## -1.600e+01 -1.600e+01
## InvoiceDate9/13/2011 11:24 InvoiceDate9/13/2011 11:34
## -2.200e+01 -2.000e+01
## InvoiceDate9/13/2011 14:50 InvoiceDate9/13/2011 14:51
## -1.400e+01 1.000e+00
## InvoiceDate9/13/2011 15:57 InvoiceDate9/13/2011 9:47
## -2.300e+01 -1.200e+01
## InvoiceDate9/14/2011 13:12 InvoiceDate9/15/2011 10:18
## -2.200e+01 -2.200e+01
## InvoiceDate9/15/2011 11:57 InvoiceDate9/15/2011 12:03
## -2.200e+01 -1.200e+01
## InvoiceDate9/16/2011 13:03 InvoiceDate9/16/2011 13:37
## -1.400e+01 -1.200e+01
## InvoiceDate9/18/2011 11:51 InvoiceDate9/18/2011 12:40
## -1.600e+01 -2.300e+01
## InvoiceDate9/18/2011 15:32 InvoiceDate9/18/2011 15:41
## -2.200e+01 -2.300e+01
## InvoiceDate9/18/2011 15:55 InvoiceDate9/19/2011 10:36
## -2.200e+01 1.600e+01
## InvoiceDate9/2/2011 10:20 InvoiceDate9/2/2011 15:56
## -1.200e+01 -1.800e+01
## InvoiceDate9/20/2011 12:12 InvoiceDate9/20/2011 12:35
## -1.200e+01 -2.100e+01
## InvoiceDate9/20/2011 12:53 InvoiceDate9/20/2011 9:40
## -2.000e+01 3.225e-13
## InvoiceDate9/21/2011 11:40 InvoiceDate9/21/2011 14:35
## -2.200e+01 -1.900e+01
## InvoiceDate9/21/2011 9:06 InvoiceDate9/22/2011 11:40
## 1.200e+01 -1.200e+01
## InvoiceDate9/22/2011 11:44 InvoiceDate9/22/2011 11:46
## 7.600e+01 1.000e+00
## InvoiceDate9/22/2011 12:02 InvoiceDate9/22/2011 12:45
## -8.000e+00 -1.900e+01
## InvoiceDate9/22/2011 13:21 InvoiceDate9/22/2011 13:31
## 1.200e+01 -2.300e+01
## InvoiceDate9/22/2011 15:03 InvoiceDate9/22/2011 16:37
## -1.600e+01 -2.300e+01
## InvoiceDate9/22/2011 17:19 InvoiceDate9/23/2011 13:48
## 7.200e+01 -2.300e+01
## InvoiceDate9/23/2011 14:05 InvoiceDate9/25/2011 11:30
## 3.514e-13 -1.800e+01
## InvoiceDate9/25/2011 12:34 InvoiceDate9/25/2011 14:08
## -2.200e+01 -2.100e+01
## InvoiceDate9/25/2011 16:06 InvoiceDate9/26/2011 12:00
## -1.200e+01 -2.000e+01
## InvoiceDate9/26/2011 12:23 InvoiceDate9/26/2011 15:28
## -1.200e+01 -2.200e+01
## InvoiceDate9/26/2011 17:20 InvoiceDate9/26/2011 8:38
## 4.061e-13 3.868e-13
## InvoiceDate9/27/2011 13:21 InvoiceDate9/28/2011 10:18
## -1.400e+01 -1.200e+01
## InvoiceDate9/28/2011 12:20 InvoiceDate9/28/2011 13:00
## -1.200e+01 -1.600e+01
## InvoiceDate9/28/2011 14:42 InvoiceDate9/28/2011 14:56
## -2.500e+01 -1.800e+01
## InvoiceDate9/28/2011 15:07 InvoiceDate9/28/2011 15:21
## -1.200e+01 -2.000e+01
## InvoiceDate9/29/2011 11:39 InvoiceDate9/29/2011 12:11
## -2.300e+01 1.760e+02
## InvoiceDate9/29/2011 12:31 InvoiceDate9/29/2011 13:04
## -1.400e+01 -2.200e+01
## InvoiceDate9/29/2011 14:38 InvoiceDate9/29/2011 9:03
## -2.200e+01 -1.400e+01
## InvoiceDate9/29/2011 9:23 InvoiceDate9/30/2011 10:48
## -2.300e+01 -1.600e+01
## InvoiceDate9/30/2011 14:41 InvoiceDate9/4/2011 11:17
## -2.200e+01 -1.200e+01
## InvoiceDate9/4/2011 11:22 InvoiceDate9/4/2011 12:41
## -1.800e+01 -2.200e+01
## InvoiceDate9/4/2011 13:35 InvoiceDate9/4/2011 15:20
## -2.100e+01 -1.200e+01
## InvoiceDate9/4/2011 16:05 InvoiceDate9/5/2011 13:22
## -1.400e+01 -4.000e+00
## InvoiceDate9/6/2011 11:58 InvoiceDate9/6/2011 12:00
## -1.400e+01 5.276e-13
## InvoiceDate9/6/2011 12:15 InvoiceDate9/7/2011 11:32
## -2.200e+01 -2.300e+01
## InvoiceDate9/8/2011 10:32 InvoiceDate9/9/2011 13:37
## -1.400e+01 -1.400e+01
## InvoiceDate9/9/2011 13:44
## 2.400e+01# Model summary
summary(model)##
## Call:
## lm(formula = Quantity ~ InvoiceDate, data = simple_data)
##
## Residuals:
## Min 1Q Median 3Q Max
## -43 0 0 0 43
##
## Coefficients:
## Estimate Std. Error t value Pr(>|t|)
## (Intercept) 2.400e+01 1.543e+01 1.555 0.12694
## InvoiceDate1/10/2011 13:22 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate1/10/2011 15:51 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate1/10/2011 16:29 4.721e-13 2.183e+01 0.000 1.00000
## InvoiceDate1/11/2011 12:11 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate1/11/2011 13:26 5.600e+01 2.183e+01 2.566 0.01370 *
## InvoiceDate1/12/2011 14:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate1/12/2011 16:51 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate1/13/2011 15:18 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate1/14/2011 13:28 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate1/14/2011 14:45 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate1/17/2011 12:45 1.514e-12 2.183e+01 0.000 1.00000
## InvoiceDate1/17/2011 13:23 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate1/17/2011 16:23 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate1/18/2011 16:45 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate1/19/2011 11:15 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate1/19/2011 13:32 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate1/19/2011 16:19 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/20/2011 12:34 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate1/21/2011 11:19 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate1/21/2011 13:07 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate1/21/2011 9:03 -2.549e-13 2.183e+01 0.000 1.00000
## InvoiceDate1/23/2011 10:43 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate1/23/2011 12:07 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/23/2011 12:19 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate1/23/2011 14:58 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate1/24/2011 11:39 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate1/25/2011 10:38 9.230e-14 2.183e+01 0.000 1.00000
## InvoiceDate1/25/2011 12:16 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate1/25/2011 14:33 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/26/2011 13:40 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate1/27/2011 12:19 2.600e+01 2.183e+01 1.191 0.23981
## InvoiceDate1/27/2011 15:02 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/27/2011 9:33 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/27/2011 9:42 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate1/28/2011 10:40 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate1/28/2011 10:47 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate1/28/2011 9:20 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/30/2011 14:36 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate1/30/2011 15:40 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate1/30/2011 15:54 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate1/31/2011 12:34 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate1/31/2011 9:51 -6.000e+00 1.890e+01 -0.317 0.75239
## InvoiceDate1/4/2011 13:30 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate1/4/2011 14:12 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate1/4/2011 15:50 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/5/2011 10:35 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate1/5/2011 14:48 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate1/6/2011 14:14 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate1/6/2011 14:53 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/7/2011 12:28 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate1/7/2011 12:44 1.411e-12 1.890e+01 0.000 1.00000
## InvoiceDate1/7/2011 14:31 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate1/9/2011 11:43 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate10/10/2011 11:03 -2.700e+01 2.183e+01 -1.237 0.22249
## InvoiceDate10/10/2011 13:12 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/10/2011 13:38 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/10/2011 17:12 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/10/2011 9:41 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/11/2011 10:31 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate10/11/2011 13:13 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/11/2011 14:52 -1.200e+01 1.890e+01 -0.635 0.52874
## InvoiceDate10/12/2011 10:51 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/12/2011 11:32 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/12/2011 11:55 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate10/12/2011 14:46 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate10/12/2011 17:00 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/13/2011 10:25 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/13/2011 10:53 -2.500e+01 2.183e+01 -1.145 0.25809
## InvoiceDate10/13/2011 12:47 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/13/2011 12:50 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate10/13/2011 12:59 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/13/2011 14:18 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate10/13/2011 14:37 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/13/2011 15:15 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/13/2011 15:19 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/14/2011 10:25 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/14/2011 10:47 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/17/2011 10:17 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate10/17/2011 12:41 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/17/2011 13:31 -2.133e+01 1.782e+01 -1.197 0.23754
## InvoiceDate10/17/2011 13:39 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate10/17/2011 14:42 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/18/2011 12:17 6.500e+00 1.890e+01 0.344 0.73254
## InvoiceDate10/18/2011 13:15 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/18/2011 14:34 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/18/2011 14:47 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/18/2011 16:46 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/19/2011 10:48 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/19/2011 10:56 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/19/2011 11:27 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/19/2011 11:52 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate10/19/2011 13:58 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/19/2011 15:08 -2.000e+01 1.890e+01 -1.058 0.29566
## InvoiceDate10/2/2011 13:26 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/2/2011 14:56 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/20/2011 12:13 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/20/2011 13:07 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/20/2011 14:18 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/20/2011 15:38 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate10/20/2011 15:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/21/2011 10:32 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/21/2011 13:17 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/21/2011 14:42 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/21/2011 9:25 -1.500e+01 2.183e+01 -0.687 0.49545
## InvoiceDate10/23/2011 11:10 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate10/23/2011 13:10 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate10/23/2011 13:49 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/23/2011 14:47 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/23/2011 15:11 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/23/2011 15:45 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/24/2011 11:33 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/24/2011 11:56 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate10/24/2011 12:53 3.600e+01 2.183e+01 1.649 0.10603
## InvoiceDate10/24/2011 14:02 -2.500e+01 2.183e+01 -1.145 0.25809
## InvoiceDate10/24/2011 14:36 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/25/2011 12:20 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/25/2011 12:54 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/25/2011 13:05 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/25/2011 13:20 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/25/2011 17:29 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate10/25/2011 17:32 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate10/26/2011 11:14 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/26/2011 11:51 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/27/2011 10:14 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/27/2011 16:23 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/27/2011 20:09 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/28/2011 12:09 -2.000e+01 1.890e+01 -1.058 0.29566
## InvoiceDate10/28/2011 12:36 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/28/2011 14:51 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/28/2011 16:45 -2.300e+01 1.890e+01 -1.217 0.23002
## InvoiceDate10/30/2011 10:54 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/30/2011 12:34 1.100e-13 2.183e+01 0.000 1.00000
## InvoiceDate10/30/2011 13:06 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate10/30/2011 13:13 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/30/2011 13:19 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/30/2011 14:03 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate10/31/2011 14:13 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/31/2011 14:22 6.000e+00 2.183e+01 0.275 0.78465
## InvoiceDate10/4/2011 10:42 1.464e-12 2.183e+01 0.000 1.00000
## InvoiceDate10/4/2011 11:33 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/4/2011 12:22 -2.150e+01 1.890e+01 -1.137 0.26137
## InvoiceDate10/4/2011 13:25 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/4/2011 13:35 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/4/2011 14:53 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate10/5/2011 12:49 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/5/2011 14:03 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate10/5/2011 14:47 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/5/2011 9:47 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate10/6/2011 10:45 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/6/2011 11:48 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/6/2011 12:15 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/6/2011 14:50 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/6/2011 18:56 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/6/2011 19:49 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate10/6/2011 20:38 -3.400e+01 2.183e+01 -1.558 0.12630
## InvoiceDate10/6/2011 9:28 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/6/2011 9:38 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate10/7/2011 11:32 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/7/2011 12:28 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/7/2011 12:38 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate10/7/2011 12:44 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate10/7/2011 12:58 -2.600e+01 2.183e+01 -1.191 0.23981
## InvoiceDate10/9/2011 10:48 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/9/2011 11:15 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate10/9/2011 13:58 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/1/2011 12:34 3.600e+01 2.183e+01 1.649 0.10603
## InvoiceDate11/1/2011 12:39 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/1/2011 15:55 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/10/2011 12:29 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/10/2011 12:37 -1.750e+01 1.890e+01 -0.926 0.35948
## InvoiceDate11/10/2011 13:46 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/10/2011 18:04 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/10/2011 19:53 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/11/2011 10:32 -3.000e+00 1.890e+01 -0.159 0.87461
## InvoiceDate11/11/2011 11:06 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/11/2011 12:17 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/11/2011 13:46 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/11/2011 14:50 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/11/2011 17:01 -2.080e+02 2.183e+01 -9.530 2.30e-12 ***
## InvoiceDate11/11/2011 8:39 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/13/2011 11:44 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/13/2011 12:27 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/13/2011 12:47 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/13/2011 14:09 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/13/2011 14:42 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/13/2011 15:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/13/2011 16:18 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/13/2011 16:22 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/14/2011 11:02 7.200e+01 2.183e+01 3.299 0.00190 **
## InvoiceDate11/14/2011 12:47 5.600e+01 2.183e+01 2.566 0.01370 *
## InvoiceDate11/14/2011 14:39 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/14/2011 14:59 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/14/2011 15:18 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/14/2011 15:27 -2.250e+01 1.890e+01 -1.190 0.24015
## InvoiceDate11/14/2011 16:28 2.012e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/14/2011 9:00 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate11/15/2011 11:37 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/15/2011 12:34 2.779e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/15/2011 12:57 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/15/2011 15:06 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/15/2011 15:42 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/15/2011 16:08 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/15/2011 16:38 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/16/2011 12:08 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/16/2011 12:19 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate11/16/2011 12:25 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/16/2011 13:24 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/16/2011 13:25 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/16/2011 9:44 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate11/17/2011 10:01 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/17/2011 10:52 7.200e+01 2.183e+01 3.299 0.00190 **
## InvoiceDate11/17/2011 12:42 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/17/2011 12:47 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/17/2011 12:59 -1.400e+01 1.890e+01 -0.741 0.46275
## InvoiceDate11/17/2011 14:08 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/17/2011 14:26 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/17/2011 15:34 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/17/2011 16:02 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/17/2011 17:34 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate11/18/2011 10:52 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate11/18/2011 12:47 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/18/2011 13:30 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/18/2011 13:33 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/18/2011 15:00 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate11/18/2011 9:11 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/2/2011 10:51 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/2/2011 11:43 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/2/2011 12:03 -5.000e+00 2.183e+01 -0.229 0.81984
## InvoiceDate11/2/2011 14:31 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/20/2011 11:25 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate11/20/2011 11:34 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate11/20/2011 11:56 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/20/2011 12:53 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/20/2011 12:55 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate11/20/2011 13:23 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/20/2011 14:07 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/20/2011 14:43 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/20/2011 15:00 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/21/2011 13:58 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate11/21/2011 15:10 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/22/2011 10:35 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/22/2011 13:08 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/22/2011 14:23 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/22/2011 15:04 1.888e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/22/2011 15:45 -2.250e+01 1.890e+01 -1.190 0.24015
## InvoiceDate11/22/2011 16:06 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/23/2011 10:31 3.800e+01 1.890e+01 2.010 0.05041 .
## InvoiceDate11/23/2011 11:07 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/23/2011 12:05 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate11/23/2011 13:51 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/23/2011 13:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/23/2011 15:44 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/23/2011 16:43 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/23/2011 17:32 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/23/2011 17:43 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate11/23/2011 17:45 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/23/2011 8:05 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/24/2011 10:07 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/24/2011 12:30 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/24/2011 12:40 1.284e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/24/2011 12:48 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/24/2011 13:25 -2.200e+01 1.890e+01 -1.164 0.25060
## InvoiceDate11/24/2011 14:51 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/24/2011 15:02 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/24/2011 15:05 1.642e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/24/2011 17:06 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate11/24/2011 17:11 3.600e+01 2.183e+01 1.649 0.10603
## InvoiceDate11/24/2011 19:30 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/24/2011 19:59 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/25/2011 13:09 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/25/2011 13:27 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate11/25/2011 16:13 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/25/2011 8:55 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/27/2011 12:26 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/27/2011 12:52 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/27/2011 15:18 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/27/2011 15:38 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/27/2011 15:59 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/28/2011 10:31 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/28/2011 10:35 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/28/2011 11:33 4.807e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/28/2011 12:44 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/28/2011 12:45 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/28/2011 13:06 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/28/2011 13:58 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/28/2011 14:06 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/28/2011 15:34 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/29/2011 10:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/29/2011 15:23 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/29/2011 17:52 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/29/2011 8:40 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/29/2011 9:47 8.822e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/29/2011 9:50 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/3/2011 15:27 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/3/2011 16:37 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/3/2011 9:17 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate11/30/2011 11:17 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/30/2011 8:44 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate11/30/2011 9:00 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate11/4/2011 13:15 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate11/4/2011 14:07 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate11/4/2011 14:19 2.900e+01 1.890e+01 1.534 0.13198
## InvoiceDate11/4/2011 15:08 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/4/2011 15:29 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate11/4/2011 15:50 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/4/2011 9:05 -2.000e+00 1.890e+01 -0.106 0.91620
## InvoiceDate11/6/2011 12:26 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate11/6/2011 12:31 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/6/2011 12:50 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/6/2011 14:33 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/6/2011 14:45 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/7/2011 10:43 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/7/2011 12:34 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/8/2011 12:58 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate11/8/2011 13:10 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/8/2011 13:22 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate11/8/2011 15:45 4.800e+01 2.183e+01 2.199 0.03305 *
## InvoiceDate11/9/2011 11:04 -2.000e+01 1.890e+01 -1.058 0.29566
## InvoiceDate11/9/2011 14:11 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/9/2011 15:02 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate11/9/2011 16:03 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate11/9/2011 16:28 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate11/9/2011 17:47 5.168e-13 2.183e+01 0.000 1.00000
## InvoiceDate11/9/2011 8:50 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/1/2010 11:57 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate12/1/2010 12:31 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/1/2010 14:38 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/1/2011 13:08 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/1/2011 13:12 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate12/1/2011 13:19 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate12/1/2011 13:28 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/1/2011 14:34 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate12/1/2011 14:38 -1.300e+01 2.183e+01 -0.596 0.55442
## InvoiceDate12/1/2011 15:24 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/1/2011 15:28 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate12/1/2011 16:37 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/10/2010 12:14 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/10/2010 13:48 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate12/10/2010 14:54 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/10/2010 17:14 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/12/2010 11:06 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/12/2010 16:05 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/13/2010 15:12 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/13/2010 15:36 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/13/2010 9:39 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/14/2010 11:39 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/14/2010 11:43 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate12/14/2010 12:06 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate12/14/2010 13:03 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/14/2010 13:35 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate12/14/2010 14:02 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/14/2010 14:40 -2.000e+01 1.890e+01 -1.058 0.29566
## InvoiceDate12/14/2010 14:42 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/14/2010 16:07 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate12/15/2010 11:26 -2.200e+01 1.890e+01 -1.164 0.25060
## InvoiceDate12/15/2010 11:53 5.520e+02 2.183e+01 25.291 < 2e-16 ***
## InvoiceDate12/15/2010 16:21 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate12/15/2010 9:09 3.844e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/16/2010 13:44 4.019e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/17/2010 15:39 4.315e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/19/2010 14:41 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/2/2010 10:54 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/2/2010 11:35 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/2/2010 13:08 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/2/2011 13:37 4.000e+01 2.183e+01 1.833 0.07348 .
## InvoiceDate12/2/2011 14:46 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/2/2011 16:07 -2.150e+01 1.890e+01 -1.137 0.26137
## InvoiceDate12/20/2010 12:05 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate12/20/2010 14:51 -1.303e-12 2.183e+01 0.000 1.00000
## InvoiceDate12/20/2010 15:22 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/21/2010 10:26 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/21/2010 16:06 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/21/2010 16:08 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/23/2010 11:24 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/23/2010 14:35 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/23/2010 14:40 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/3/2010 11:19 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/3/2010 12:24 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/3/2010 13:40 8.000e+00 2.183e+01 0.367 0.71569
## InvoiceDate12/3/2010 14:04 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate12/3/2010 14:26 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate12/3/2010 14:54 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/4/2011 11:00 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/4/2011 12:17 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/4/2011 13:15 -2.000e+01 1.890e+01 -1.058 0.29566
## InvoiceDate12/4/2011 14:55 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/4/2011 15:18 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/5/2010 13:05 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/5/2010 14:19 5.325e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/5/2010 14:25 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/5/2010 16:24 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/5/2011 10:00 1.989e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/5/2011 11:05 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/5/2011 12:51 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/5/2011 14:06 7.200e+01 2.183e+01 3.299 0.00190 **
## InvoiceDate12/5/2011 14:29 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate12/5/2011 14:49 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate12/5/2011 17:17 -2.300e+01 1.890e+01 -1.217 0.23002
## InvoiceDate12/6/2010 11:26 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/6/2010 12:55 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/6/2010 13:22 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/6/2010 13:58 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/6/2010 14:31 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/6/2010 14:51 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/6/2011 11:58 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/6/2011 12:15 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate12/6/2011 16:02 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/6/2011 16:34 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/7/2011 10:09 2.423e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/7/2011 12:34 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/7/2011 12:48 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/7/2011 12:55 4.786e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/7/2011 14:12 -2.150e+01 1.890e+01 -1.137 0.26137
## InvoiceDate12/7/2011 14:39 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/7/2011 14:43 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/7/2011 15:43 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/7/2011 16:47 5.320e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/7/2011 16:56 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/7/2011 17:05 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate12/8/2010 10:13 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/8/2010 10:36 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/8/2010 14:22 1.984e-13 2.183e+01 0.000 1.00000
## InvoiceDate12/8/2010 16:49 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate12/8/2011 11:53 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate12/8/2011 13:47 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate12/8/2011 13:50 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate12/8/2011 15:54 -1.000e+01 1.890e+01 -0.529 0.59938
## InvoiceDate12/8/2011 16:22 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate12/8/2011 18:51 -7.200e+01 2.183e+01 -3.299 0.00190 **
## InvoiceDate12/9/2010 10:16 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate12/9/2010 12:17 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate12/9/2010 14:05 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate12/9/2010 16:53 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate12/9/2011 11:26 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/1/2011 12:29 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate2/1/2011 8:23 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/10/2011 12:32 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/10/2011 15:24 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate2/11/2011 12:36 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate2/13/2011 12:03 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate2/14/2011 10:10 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate2/14/2011 14:39 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate2/15/2011 17:02 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate2/15/2011 9:20 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate2/16/2011 11:03 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate2/16/2011 11:45 1.054e-12 2.183e+01 0.000 1.00000
## InvoiceDate2/17/2011 12:21 1.397e-13 2.183e+01 0.000 1.00000
## InvoiceDate2/17/2011 12:29 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate2/17/2011 12:33 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate2/17/2011 14:36 6.929e-13 2.183e+01 0.000 1.00000
## InvoiceDate2/2/2011 9:06 -1.500e+01 2.183e+01 -0.687 0.49545
## InvoiceDate2/20/2011 10:56 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate2/21/2011 10:28 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate2/21/2011 12:53 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/22/2011 12:13 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate2/22/2011 13:20 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate2/22/2011 15:09 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate2/22/2011 15:46 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate2/23/2011 10:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate2/23/2011 12:03 -2.250e+01 1.890e+01 -1.190 0.24015
## InvoiceDate2/23/2011 12:27 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate2/23/2011 13:45 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/23/2011 15:53 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/24/2011 12:09 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/24/2011 14:15 1.600e+01 2.183e+01 0.733 0.46732
## InvoiceDate2/24/2011 14:32 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate2/25/2011 10:29 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate2/25/2011 12:48 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate2/25/2011 14:11 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate2/3/2011 11:49 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate2/3/2011 12:44 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate2/3/2011 13:26 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate2/3/2011 9:04 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/4/2011 14:51 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate2/7/2011 11:56 -2.300e+01 1.890e+01 -1.217 0.23002
## InvoiceDate2/7/2011 12:27 8.745e-13 2.183e+01 0.000 1.00000
## InvoiceDate2/7/2011 14:51 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate2/8/2011 10:32 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate2/8/2011 11:36 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate2/9/2011 11:21 2.600e+01 2.183e+01 1.191 0.23981
## InvoiceDate3/1/2011 14:26 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/1/2011 8:35 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/10/2011 19:05 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/11/2011 13:13 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate3/13/2011 10:48 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate3/14/2011 12:28 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate3/14/2011 13:04 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate3/14/2011 13:56 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/14/2011 15:13 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/15/2011 10:53 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/15/2011 11:45 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/15/2011 15:31 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate3/15/2011 15:33 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/16/2011 10:17 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate3/16/2011 11:52 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate3/16/2011 14:57 -1.500e+01 1.890e+01 -0.794 0.43161
## InvoiceDate3/16/2011 16:38 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate3/17/2011 13:13 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/17/2011 16:38 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate3/17/2011 18:27 6.000e+00 2.183e+01 0.275 0.78465
## InvoiceDate3/17/2011 20:12 -2.150e+01 1.890e+01 -1.137 0.26137
## InvoiceDate3/17/2011 9:49 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate3/18/2011 11:24 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate3/18/2011 11:30 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate3/18/2011 12:15 -7.400e+01 2.183e+01 -3.390 0.00146 **
## InvoiceDate3/2/2011 11:43 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate3/2/2011 17:33 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate3/20/2011 13:33 -1.100e+01 1.890e+01 -0.582 0.56351
## InvoiceDate3/21/2011 12:42 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate3/21/2011 16:32 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/22/2011 12:15 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate3/22/2011 12:27 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/23/2011 10:25 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/23/2011 12:24 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/23/2011 13:39 3.982e-13 2.183e+01 0.000 1.00000
## InvoiceDate3/23/2011 9:42 2.999e-13 2.183e+01 0.000 1.00000
## InvoiceDate3/24/2011 13:04 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/24/2011 14:07 -7.300e+01 2.183e+01 -3.345 0.00167 **
## InvoiceDate3/24/2011 16:23 -6.000e+00 2.183e+01 -0.275 0.78465
## InvoiceDate3/24/2011 8:44 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/24/2011 9:50 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate3/25/2011 10:52 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/25/2011 11:41 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/25/2011 14:01 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate3/27/2011 13:56 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/27/2011 16:08 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/28/2011 12:52 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/29/2011 12:57 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/29/2011 15:44 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate3/3/2011 12:06 1.541e-13 2.183e+01 0.000 1.00000
## InvoiceDate3/30/2011 12:12 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate3/30/2011 13:26 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/30/2011 13:28 4.532e-13 2.183e+01 0.000 1.00000
## InvoiceDate3/4/2011 14:02 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/4/2011 14:13 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate3/6/2011 14:44 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/6/2011 15:17 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/7/2011 10:52 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate3/7/2011 13:33 -2.500e+01 2.183e+01 -1.145 0.25809
## InvoiceDate3/7/2011 14:51 -1.700e+01 1.890e+01 -0.899 0.37324
## InvoiceDate3/7/2011 17:23 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate3/7/2011 17:52 -2.250e+01 1.890e+01 -1.190 0.24015
## InvoiceDate3/8/2011 10:04 3.381e-13 2.183e+01 0.000 1.00000
## InvoiceDate3/8/2011 13:54 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate3/8/2011 14:12 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate3/8/2011 14:44 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate3/8/2011 16:48 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate3/8/2011 9:45 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate3/9/2011 10:51 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate3/9/2011 11:05 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate3/9/2011 12:04 1.318e-13 2.183e+01 0.000 1.00000
## InvoiceDate3/9/2011 13:56 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/1/2011 11:50 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/1/2011 13:20 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/1/2011 14:58 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate4/10/2011 12:36 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/10/2011 13:21 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate4/11/2011 10:14 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate4/11/2011 13:22 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate4/11/2011 14:07 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate4/12/2011 10:38 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate4/12/2011 13:24 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate4/12/2011 17:12 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate4/13/2011 15:57 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/14/2011 10:54 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/14/2011 13:17 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate4/14/2011 14:14 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate4/14/2011 16:26 -1.150e+01 1.890e+01 -0.608 0.54598
## InvoiceDate4/14/2011 19:15 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate4/15/2011 14:21 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/17/2011 10:27 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/18/2011 12:17 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate4/19/2011 13:09 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/19/2011 13:41 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/19/2011 16:52 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/20/2011 13:58 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/20/2011 17:00 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/21/2011 12:00 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/21/2011 12:12 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate4/21/2011 14:37 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate4/21/2011 19:05 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/26/2011 11:04 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate4/26/2011 9:44 -1.850e+01 1.890e+01 -0.979 0.33295
## InvoiceDate4/27/2011 13:06 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/27/2011 14:27 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate4/27/2011 14:58 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate4/28/2011 10:20 3.722e-13 2.183e+01 0.000 1.00000
## InvoiceDate4/28/2011 13:35 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/28/2011 15:26 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/4/2011 10:40 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate4/4/2011 12:37 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate4/5/2011 11:44 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate4/5/2011 9:32 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate4/6/2011 10:20 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate4/6/2011 11:34 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate4/6/2011 13:18 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/7/2011 10:10 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate4/7/2011 12:29 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate4/7/2011 18:03 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate4/8/2011 11:33 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate4/8/2011 13:14 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/1/2011 11:58 -2.600e+01 2.183e+01 -1.191 0.23981
## InvoiceDate5/10/2011 12:53 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/10/2011 9:41 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/11/2011 14:25 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/11/2011 14:52 -3.000e+01 2.183e+01 -1.374 0.17610
## InvoiceDate5/11/2011 15:08 -2.150e+01 1.890e+01 -1.137 0.26137
## InvoiceDate5/12/2011 12:57 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate5/12/2011 13:37 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/12/2011 13:58 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate5/12/2011 16:29 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/13/2011 10:02 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/13/2011 10:09 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/13/2011 10:22 3.216e-13 2.183e+01 0.000 1.00000
## InvoiceDate5/13/2011 10:44 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/13/2011 15:24 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/15/2011 11:29 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/15/2011 12:21 -2.050e+01 1.890e+01 -1.085 0.28390
## InvoiceDate5/15/2011 12:35 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/15/2011 13:14 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/15/2011 13:37 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/15/2011 16:02 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/16/2011 10:41 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate5/16/2011 10:48 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/16/2011 13:35 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/17/2011 10:08 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate5/17/2011 10:23 7.476e-13 2.183e+01 0.000 1.00000
## InvoiceDate5/17/2011 11:07 3.600e+01 2.183e+01 1.649 0.10603
## InvoiceDate5/17/2011 11:28 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/17/2011 12:47 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/17/2011 14:46 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/17/2011 15:26 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/17/2011 8:37 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/18/2011 12:21 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/18/2011 13:00 3.925e-13 2.183e+01 0.000 1.00000
## InvoiceDate5/18/2011 13:56 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/18/2011 16:56 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate5/18/2011 9:59 4.740e-13 2.183e+01 0.000 1.00000
## InvoiceDate5/19/2011 13:35 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/19/2011 17:22 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/20/2011 10:37 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/22/2011 10:39 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/22/2011 11:52 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/22/2011 12:51 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/22/2011 13:01 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/22/2011 14:03 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate5/22/2011 14:05 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/22/2011 15:44 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/23/2011 13:17 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate5/23/2011 9:48 3.334e-13 2.183e+01 0.000 1.00000
## InvoiceDate5/24/2011 10:33 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/24/2011 16:25 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate5/24/2011 9:10 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/25/2011 10:12 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/25/2011 10:35 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/25/2011 11:12 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate5/25/2011 12:39 7.600e+01 2.183e+01 3.482 0.00112 **
## InvoiceDate5/25/2011 12:54 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/25/2011 13:36 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/25/2011 15:18 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate5/25/2011 17:12 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/25/2011 17:31 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/26/2011 19:56 -3.600e+01 2.183e+01 -1.649 0.10603
## InvoiceDate5/27/2011 13:30 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate5/27/2011 13:32 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate5/29/2011 12:35 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate5/3/2011 15:23 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/31/2011 13:08 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/4/2011 14:03 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/5/2011 14:55 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/5/2011 17:26 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/5/2011 9:18 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate5/6/2011 10:10 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate5/6/2011 10:43 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/6/2011 8:08 1.600e+01 2.183e+01 0.733 0.46732
## InvoiceDate5/8/2011 11:38 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate5/8/2011 12:00 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate5/9/2011 12:40 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate5/9/2011 9:15 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/10/2011 10:26 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/10/2011 12:19 4.800e+01 1.890e+01 2.539 0.01463 *
## InvoiceDate6/12/2011 12:00 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/12/2011 12:20 -1.000e+01 2.183e+01 -0.458 0.64904
## InvoiceDate6/12/2011 13:04 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate6/12/2011 13:17 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/12/2011 14:48 7.200e+01 2.183e+01 3.299 0.00190 **
## InvoiceDate6/12/2011 15:57 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/13/2011 13:13 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/13/2011 14:13 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate6/14/2011 10:00 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/15/2011 12:21 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate6/15/2011 13:05 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/15/2011 13:49 -2.600e+01 2.183e+01 -1.191 0.23981
## InvoiceDate6/15/2011 14:26 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/15/2011 16:42 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/16/2011 11:24 6.054e-13 2.183e+01 0.000 1.00000
## InvoiceDate6/17/2011 12:30 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate6/17/2011 13:14 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate6/17/2011 13:57 3.808e-13 2.183e+01 0.000 1.00000
## InvoiceDate6/17/2011 14:44 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate6/17/2011 9:12 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate6/19/2011 10:55 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/19/2011 15:36 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate6/19/2011 16:02 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/20/2011 13:08 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate6/20/2011 14:36 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/20/2011 16:52 -2.700e+01 2.183e+01 -1.237 0.22249
## InvoiceDate6/21/2011 12:35 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/21/2011 14:15 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/21/2011 15:41 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/22/2011 11:46 4.036e-13 2.183e+01 0.000 1.00000
## InvoiceDate6/22/2011 14:01 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate6/23/2011 13:37 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate6/23/2011 17:35 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/24/2011 10:31 3.354e-13 2.183e+01 0.000 1.00000
## InvoiceDate6/26/2011 13:24 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/27/2011 10:16 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate6/27/2011 13:00 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/28/2011 11:22 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/28/2011 15:31 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate6/28/2011 8:45 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/3/2011 8:54 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate6/30/2011 13:17 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/5/2011 14:48 -2.500e+01 2.183e+01 -1.145 0.25809
## InvoiceDate6/6/2011 11:37 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/6/2011 13:46 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/7/2011 12:01 3.718e-13 2.183e+01 0.000 1.00000
## InvoiceDate6/7/2011 13:44 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate6/7/2011 13:56 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/8/2011 10:45 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate6/8/2011 12:44 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate6/8/2011 16:15 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate6/8/2011 8:46 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate6/9/2011 10:06 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate6/9/2011 12:02 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate6/9/2011 14:18 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate7/1/2011 12:11 -2.500e+01 2.183e+01 -1.145 0.25809
## InvoiceDate7/10/2011 11:24 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate7/11/2011 12:31 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/11/2011 14:04 -6.000e+00 1.890e+01 -0.317 0.75239
## InvoiceDate7/11/2011 17:07 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate7/12/2011 14:48 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate7/12/2011 9:11 1.760e+02 2.183e+01 8.064 2.79e-10 ***
## InvoiceDate7/13/2011 11:44 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate7/13/2011 13:20 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate7/14/2011 12:12 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate7/14/2011 13:00 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate7/14/2011 14:08 8.000e+00 2.183e+01 0.367 0.71569
## InvoiceDate7/14/2011 15:01 -1.150e+01 1.890e+01 -0.608 0.54598
## InvoiceDate7/14/2011 20:01 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate7/15/2011 10:21 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate7/15/2011 13:10 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate7/15/2011 16:06 -1.500e+01 2.183e+01 -0.687 0.49545
## InvoiceDate7/17/2011 14:59 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate7/19/2011 11:03 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate7/19/2011 12:10 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/19/2011 13:24 -2.700e+01 2.183e+01 -1.237 0.22249
## InvoiceDate7/19/2011 15:23 3.600e+01 2.183e+01 1.649 0.10603
## InvoiceDate7/19/2011 9:08 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate7/19/2011 9:29 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/20/2011 12:38 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/20/2011 12:58 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/20/2011 8:59 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate7/21/2011 13:37 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/21/2011 16:20 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/21/2011 16:28 8.000e+00 2.183e+01 0.367 0.71569
## InvoiceDate7/22/2011 13:20 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate7/22/2011 13:29 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate7/22/2011 15:02 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate7/22/2011 16:04 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/24/2011 12:05 5.532e-13 2.183e+01 0.000 1.00000
## InvoiceDate7/24/2011 15:39 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/25/2011 12:09 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate7/25/2011 12:22 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate7/25/2011 13:06 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/25/2011 13:54 9.373e-13 2.183e+01 0.000 1.00000
## InvoiceDate7/26/2011 11:38 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate7/26/2011 12:28 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/26/2011 13:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/26/2011 15:29 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate7/27/2011 13:17 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate7/28/2011 12:29 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate7/28/2011 13:28 2.588e-13 2.183e+01 0.000 1.00000
## InvoiceDate7/29/2011 17:28 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/3/2011 12:38 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate7/3/2011 13:33 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/31/2011 10:38 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/31/2011 12:02 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/31/2011 15:00 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/4/2011 12:58 9.600e+01 2.183e+01 4.398 6.61e-05 ***
## InvoiceDate7/4/2011 13:50 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate7/4/2011 14:07 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate7/5/2011 13:06 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate7/6/2011 14:59 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/7/2011 12:47 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate7/7/2011 18:02 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/7/2011 18:29 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/7/2011 19:14 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate7/8/2011 11:55 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate7/8/2011 12:14 2.954e-13 2.183e+01 0.000 1.00000
## InvoiceDate7/8/2011 13:26 7.600e+01 2.183e+01 3.482 0.00112 **
## InvoiceDate7/8/2011 15:16 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate7/8/2011 15:29 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate7/8/2011 8:45 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate8/1/2011 10:23 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate8/1/2011 12:28 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate8/1/2011 17:37 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate8/10/2011 13:19 3.963e-13 2.183e+01 0.000 1.00000
## InvoiceDate8/10/2011 13:25 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate8/11/2011 12:44 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate8/11/2011 13:34 -1.500e+01 2.183e+01 -0.687 0.49545
## InvoiceDate8/11/2011 14:53 1.600e+01 2.183e+01 0.733 0.46732
## InvoiceDate8/11/2011 15:25 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/11/2011 16:11 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate8/12/2011 9:57 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/14/2011 10:49 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/15/2011 13:07 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate8/15/2011 13:48 -1.500e+01 1.890e+01 -0.794 0.43161
## InvoiceDate8/15/2011 14:32 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate8/16/2011 10:50 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/17/2011 10:59 -1.700e+01 2.183e+01 -0.779 0.44013
## InvoiceDate8/17/2011 14:22 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/18/2011 12:41 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate8/18/2011 19:13 -2.250e+01 1.890e+01 -1.190 0.24015
## InvoiceDate8/19/2011 10:18 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/19/2011 14:57 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate8/2/2011 10:19 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/2/2011 10:24 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate8/21/2011 11:15 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate8/21/2011 12:36 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate8/22/2011 10:08 6.000e+00 2.183e+01 0.275 0.78465
## InvoiceDate8/22/2011 14:13 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate8/22/2011 15:05 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/23/2011 15:24 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/24/2011 12:04 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate8/24/2011 13:22 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/24/2011 14:54 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/24/2011 14:59 2.400e+01 2.183e+01 1.100 0.27736
## InvoiceDate8/24/2011 15:08 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate8/24/2011 9:56 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/26/2011 9:37 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate8/28/2011 12:28 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate8/28/2011 13:32 -1.800e+01 1.890e+01 -0.952 0.34604
## InvoiceDate8/28/2011 16:09 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/3/2011 10:04 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/3/2011 12:12 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate8/3/2011 13:39 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate8/30/2011 11:32 3.565e-13 2.183e+01 0.000 1.00000
## InvoiceDate8/31/2011 16:28 6.000e+00 2.183e+01 0.275 0.78465
## InvoiceDate8/31/2011 17:12 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/4/2011 10:38 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate8/4/2011 16:31 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate8/4/2011 17:19 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/4/2011 20:01 -1.500e+01 1.890e+01 -0.794 0.43161
## InvoiceDate8/5/2011 15:02 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate8/5/2011 16:43 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/8/2011 14:53 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/9/2011 13:22 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate8/9/2011 13:50 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate8/9/2011 15:12 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate8/9/2011 9:26 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate9/1/2011 12:16 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/1/2011 14:42 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate9/1/2011 16:30 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/1/2011 16:50 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/1/2011 19:08 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/1/2011 19:11 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/11/2011 12:16 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/11/2011 14:01 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/11/2011 14:51 5.833e-13 2.183e+01 0.000 1.00000
## InvoiceDate9/11/2011 15:11 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/12/2011 13:16 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/12/2011 15:01 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/12/2011 16:12 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate9/12/2011 16:14 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate9/13/2011 11:24 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/13/2011 11:34 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate9/13/2011 14:50 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/13/2011 14:51 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate9/13/2011 15:57 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/13/2011 9:47 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/14/2011 13:12 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/15/2011 10:18 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/15/2011 11:57 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/15/2011 12:03 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/16/2011 13:03 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/16/2011 13:37 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/18/2011 11:51 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate9/18/2011 12:40 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/18/2011 15:32 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/18/2011 15:41 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/18/2011 15:55 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/19/2011 10:36 1.600e+01 2.183e+01 0.733 0.46732
## InvoiceDate9/2/2011 10:20 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/2/2011 15:56 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/20/2011 12:12 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/20/2011 12:35 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate9/20/2011 12:53 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate9/20/2011 9:40 3.225e-13 2.183e+01 0.000 1.00000
## InvoiceDate9/21/2011 11:40 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/21/2011 14:35 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate9/21/2011 9:06 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate9/22/2011 11:40 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/22/2011 11:44 7.600e+01 2.183e+01 3.482 0.00112 **
## InvoiceDate9/22/2011 11:46 1.000e+00 2.183e+01 0.046 0.96366
## InvoiceDate9/22/2011 12:02 -8.000e+00 2.183e+01 -0.367 0.71569
## InvoiceDate9/22/2011 12:45 -1.900e+01 2.183e+01 -0.871 0.38864
## InvoiceDate9/22/2011 13:21 1.200e+01 2.183e+01 0.550 0.58518
## InvoiceDate9/22/2011 13:31 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/22/2011 15:03 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate9/22/2011 16:37 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/22/2011 17:19 7.200e+01 2.183e+01 3.299 0.00190 **
## InvoiceDate9/23/2011 13:48 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/23/2011 14:05 3.514e-13 2.183e+01 0.000 1.00000
## InvoiceDate9/25/2011 11:30 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/25/2011 12:34 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/25/2011 14:08 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate9/25/2011 16:06 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/26/2011 12:00 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate9/26/2011 12:23 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/26/2011 15:28 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/26/2011 17:20 4.061e-13 2.183e+01 0.000 1.00000
## InvoiceDate9/26/2011 8:38 3.868e-13 2.183e+01 0.000 1.00000
## InvoiceDate9/27/2011 13:21 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/28/2011 10:18 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/28/2011 12:20 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/28/2011 13:00 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate9/28/2011 14:42 -2.500e+01 2.183e+01 -1.145 0.25809
## InvoiceDate9/28/2011 14:56 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/28/2011 15:07 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/28/2011 15:21 -2.000e+01 2.183e+01 -0.916 0.36438
## InvoiceDate9/29/2011 11:39 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/29/2011 12:11 1.760e+02 2.183e+01 8.064 2.79e-10 ***
## InvoiceDate9/29/2011 12:31 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/29/2011 13:04 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/29/2011 14:38 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/29/2011 9:03 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/29/2011 9:23 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/30/2011 10:48 -1.600e+01 2.183e+01 -0.733 0.46732
## InvoiceDate9/30/2011 14:41 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/4/2011 11:17 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/4/2011 11:22 -1.800e+01 2.183e+01 -0.825 0.41389
## InvoiceDate9/4/2011 12:41 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/4/2011 13:35 -2.100e+01 2.183e+01 -0.962 0.34112
## InvoiceDate9/4/2011 15:20 -1.200e+01 2.183e+01 -0.550 0.58518
## InvoiceDate9/4/2011 16:05 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/5/2011 13:22 -4.000e+00 2.183e+01 -0.183 0.85541
## InvoiceDate9/6/2011 11:58 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/6/2011 12:00 5.276e-13 2.183e+01 0.000 1.00000
## InvoiceDate9/6/2011 12:15 -2.200e+01 2.183e+01 -1.008 0.31886
## InvoiceDate9/7/2011 11:32 -2.300e+01 2.183e+01 -1.054 0.29761
## InvoiceDate9/8/2011 10:32 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/9/2011 13:37 -1.400e+01 2.183e+01 -0.641 0.52450
## InvoiceDate9/9/2011 13:44 2.400e+01 2.183e+01 1.100 0.27736
## ---
## Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
##
## Residual standard error: 15.43 on 45 degrees of freedom
## Multiple R-squared: 0.9839, Adjusted R-squared: 0.6418
## F-statistic: 2.877 on 954 and 45 DF, p-value: 1.726e-05Visualization of the model :
# Residuals vs fitted
resid <- residuals(model)
fitted <- fitted(model)
plot(fitted, resid,
main="Residuals vs Fitted")
abline(h=0, col="red")
lines(lowess(fitted, resid), col="blue")
# Observed vs predicted
plot(simple_data$Quantity, fitted(model),
main="Observed vs Predicted")
abline(0,1, col="red")
The model satisfies the linearity assumption reasonably well:
The residuals vs fitted resulting in a horizontal blue line indicates the residuals are randomly scattered around 0 without any noticeable curve or pattern. This suggests linearity.
The red line boundaries on the residuals plot are likely ±2 standard deviations - we expect most residuals to fall within these bounds.
For observed vs predicted, the points aligning well with the diagonal red line means the observed values match the predicted values from the linear model. This alignment supports linearity.
Points overlapping on the line and concentrated near it reinforce that the linear fit captures the relationship accurately.
# Diagnostics
par(mfrow=c(2,2))
plot(model)## Warning: not plotting observations with leverage one:
## 6, 7, 8, 9, 13, 18, 19, 24, 26, 27, 28, 30, 34, 35, 36, 38, 40, 42, 43, 45, 49, 50, 51, 52, 53, 56, 59, 60, 61, 62, 63, 65, 67, 71, 72, 73, 74, 76, 78, 79, 81, 82, 83, 84, 88, 92, 97, 101, 102, 103, 104, 108, 109, 112, 115, 116, 117, 119, 120, 121, 122, 123, 125, 126, 127, 129, 130, 132, 134, 135, 137, 141, 143, 144, 146, 148, 151, 152, 153, 155, 156, 157, 158, 161, 163, 164, 167, 168, 171, 172, 173, 174, 178, 180, 181, 184, 186, 187, 189, 190, 191, 193, 198, 199, 201, 202, 203, 204, 206, 207, 208, 210, 212, 215, 216, 218, 223, 224, 232, 234, 237, 239, 242, 243, 244, 245, 248, 249, 251, 252, 253, 257, 261, 262, 263, 264, 266, 267, 272, 277, 278, 279, 284, 286, 290, 291, 293, 296, 297, 300, 303, 304, 307, 309, 311, 320, 322, 324, 325, 327, 328, 333, 338, 344, 345, 346, 347, 349, 350, 351, 352, 354, 355, 361, 363, 364, 367, 371, 374, 380, 382, 383, 384, 385, 387, 388, 389, 390, 391, 394, 395, 396, 397, 399, 400, 401, 404, 405, 406, 407, 408, 412, 413, 416, 419, 420, 421, 423, 424, 426, 430, 431, 435, 437, 440, 442, 443, 444, 445, 447, 448, 449, 450, 451, 452, 453, 454, 455, 458, 459, 461, 465, 468, 470, 471, 472, 474, 475, 477, 478, 480, 481, 482, 483, 485, 486, 489, 490, 492, 493, 494, 499, 500, 501, 502, 504, 507, 509, 510, 512, 515, 516, 517, 518, 519, 522, 523, 525, 528, 529, 530, 534, 536, 537, 540, 541, 542, 545, 547, 548, 549, 552, 555, 558, 560, 562, 564, 566, 567, 570, 571, 573, 574, 575, 577, 578, 581, 583, 585, 594, 595, 597, 598, 600, 601, 603, 604, 605, 606, 608, 611, 612, 613, 618, 623, 626, 627, 628, 629, 631, 632, 633, 634, 635, 636, 638, 639, 643, 644, 645, 646, 650, 651, 653, 655, 656, 657, 658, 660, 661, 662, 663, 666, 667, 668, 669, 671, 676, 677, 679, 680, 681, 682, 683, 685, 687, 689, 690, 692, 693, 695, 696, 697, 698, 700, 701, 702, 703, 704, 705, 706, 708, 709, 710, 711, 712, 714, 715, 716, 717, 718, 719, 721, 722, 723, 724, 725, 729, 730, 731, 732, 733, 735, 736, 737, 738, 740, 741, 742, 743, 744, 746, 747, 749, 750, 752, 753, 755, 756, 758, 759, 760, 761, 762, 763, 765, 767, 768, 772, 773, 774, 775, 776, 777, 778, 779, 780, 781, 784, 785, 787, 788, 789, 790, 791, 794, 795, 800, 801, 802, 803, 807, 809, 812, 813, 815, 816, 817, 821, 822, 823, 825, 826, 827, 828, 829, 830, 831, 834, 835, 836, 837, 838, 839, 840, 843, 846, 848, 849, 850, 851, 853, 854, 855, 856, 857, 861, 862, 864, 866, 867, 868, 870, 872, 874, 875, 877, 878, 879, 880, 881, 882, 884, 887, 890, 891, 892, 895, 896, 899, 901, 902, 903, 904, 905, 906, 907, 908, 909, 910, 911, 913, 914, 916, 917, 919, 920, 921, 922, 923, 924, 928, 929, 930, 931, 932, 933, 934, 938, 939, 940, 941, 943, 944, 945, 947, 948, 949, 950, 951, 952, 953, 954, 955, 956, 957, 958, 959, 960, 961, 962, 963, 964, 965, 966, 968, 969, 970, 971, 973, 974, 975, 978, 979, 980, 981, 982, 983, 984, 985, 986, 987, 988, 989, 990, 991, 992, 993, 994, 996, 997, 999, 1000## Warning in sqrt(crit * p * (1 - hh)/hh): NaNs produced
## Warning in sqrt(crit * p * (1 - hh)/hh): NaNs produced
hatvalues(model) ## 1 2 3 4 5 6 7 8
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 9 10 11 12 13 14 15 16
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 0.5000000 1.0000000
## 17 18 19 20 21 22 23 24
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 25 26 27 28 29 30 31 32
## 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 0.5000000
## 33 34 35 36 37 38 39 40
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 41 42 43 44 45 46 47 48
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 49 50 51 52 53 54 55 56
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 57 58 59 60 61 62 63 64
## 0.5000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 65 66 67 68 69 70 71 72
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 73 74 75 76 77 78 79 80
## 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000
## 81 82 83 84 85 86 87 88
## 1.0000000 1.0000000 1.0000000 1.0000000 0.3333333 1.0000000 1.0000000 1.0000000
## 89 90 91 92 93 94 95 96
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 97 98 99 100 101 102 103 104
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 105 106 107 108 109 110 111 112
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 113 114 115 116 117 118 119 120
## 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 121 122 123 124 125 126 127 128
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 129 130 131 132 133 134 135 136
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 137 138 139 140 141 142 143 144
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 145 146 147 148 149 150 151 152
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 153 154 155 156 157 158 159 160
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 161 162 163 164 165 166 167 168
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 169 170 171 172 173 174 175 176
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 177 178 179 180 181 182 183 184
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 185 186 187 188 189 190 191 192
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 193 194 195 196 197 198 199 200
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 201 202 203 204 205 206 207 208
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 209 210 211 212 213 214 215 216
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 217 218 219 220 221 222 223 224
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 225 226 227 228 229 230 231 232
## 1.0000000 0.5000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 233 234 235 236 237 238 239 240
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 241 242 243 244 245 246 247 248
## 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 249 250 251 252 253 254 255 256
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 257 258 259 260 261 262 263 264
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 265 266 267 268 269 270 271 272
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 273 274 275 276 277 278 279 280
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 281 282 283 284 285 286 287 288
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 289 290 291 292 293 294 295 296
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 297 298 299 300 301 302 303 304
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 305 306 307 308 309 310 311 312
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 313 314 315 316 317 318 319 320
## 0.5000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 321 322 323 324 325 326 327 328
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 329 330 331 332 333 334 335 336
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 337 338 339 340 341 342 343 344
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 345 346 347 348 349 350 351 352
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 353 354 355 356 357 358 359 360
## 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 361 362 363 364 365 366 367 368
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 369 370 371 372 373 374 375 376
## 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000
## 377 378 379 380 381 382 383 384
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 385 386 387 388 389 390 391 392
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 393 394 395 396 397 398 399 400
## 0.3333333 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 401 402 403 404 405 406 407 408
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 409 410 411 412 413 414 415 416
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 417 418 419 420 421 422 423 424
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 425 426 427 428 429 430 431 432
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 433 434 435 436 437 438 439 440
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 441 442 443 444 445 446 447 448
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 449 450 451 452 453 454 455 456
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 457 458 459 460 461 462 463 464
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 465 466 467 468 469 470 471 472
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 473 474 475 476 477 478 479 480
## 0.5000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 481 482 483 484 485 486 487 488
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 489 490 491 492 493 494 495 496
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 497 498 499 500 501 502 503 504
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 505 506 507 508 509 510 511 512
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 513 514 515 516 517 518 519 520
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 521 522 523 524 525 526 527 528
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 529 530 531 532 533 534 535 536
## 1.0000000 1.0000000 0.5000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000
## 537 538 539 540 541 542 543 544
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 545 546 547 548 549 550 551 552
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 553 554 555 556 557 558 559 560
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 561 562 563 564 565 566 567 568
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 569 570 571 572 573 574 575 576
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 577 578 579 580 581 582 583 584
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 585 586 587 588 589 590 591 592
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 593 594 595 596 597 598 599 600
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 601 602 603 604 605 606 607 608
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 609 610 611 612 613 614 615 616
## 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 617 618 619 620 621 622 623 624
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 625 626 627 628 629 630 631 632
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 633 634 635 636 637 638 639 640
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 641 642 643 644 645 646 647 648
## 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 649 650 651 652 653 654 655 656
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 657 658 659 660 661 662 663 664
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 665 666 667 668 669 670 671 672
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 673 674 675 676 677 678 679 680
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 681 682 683 684 685 686 687 688
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 689 690 691 692 693 694 695 696
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 697 698 699 700 701 702 703 704
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 705 706 707 708 709 710 711 712
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 713 714 715 716 717 718 719 720
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 721 722 723 724 725 726 727 728
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 729 730 731 732 733 734 735 736
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.3333333 1.0000000 1.0000000
## 737 738 739 740 741 742 743 744
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 745 746 747 748 749 750 751 752
## 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 753 754 755 756 757 758 759 760
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 761 762 763 764 765 766 767 768
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 769 770 771 772 773 774 775 776
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 777 778 779 780 781 782 783 784
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 785 786 787 788 789 790 791 792
## 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 793 794 795 796 797 798 799 800
## 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 0.5000000 0.5000000 1.0000000
## 801 802 803 804 805 806 807 808
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 809 810 811 812 813 814 815 816
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 817 818 819 820 821 822 823 824
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 825 826 827 828 829 830 831 832
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 833 834 835 836 837 838 839 840
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 841 842 843 844 845 846 847 848
## 1.0000000 0.5000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 849 850 851 852 853 854 855 856
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 857 858 859 860 861 862 863 864
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 865 866 867 868 869 870 871 872
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 873 874 875 876 877 878 879 880
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 881 882 883 884 885 886 887 888
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 889 890 891 892 893 894 895 896
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 897 898 899 900 901 902 903 904
## 1.0000000 0.5000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 905 906 907 908 909 910 911 912
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000
## 913 914 915 916 917 918 919 920
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000
## 921 922 923 924 925 926 927 928
## 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 0.5000000 1.0000000 1.0000000
## 929 930 931 932 933 934 935 936
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 937 938 939 940 941 942 943 944
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 945 946 947 948 949 950 951 952
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 953 954 955 956 957 958 959 960
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 961 962 963 964 965 966 967 968
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000
## 969 970 971 972 973 974 975 976
## 1.0000000 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000
## 977 978 979 980 981 982 983 984
## 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 985 986 987 988 989 990 991 992
## 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000
## 993 994 995 996 997 998 999 1000
## 1.0000000 1.0000000 0.5000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000Diagnosis of potential issues with the linear model based on the output:
Overfitting:
955 predictors for 1000 observations indicates severe overfitting is likely occurring.
High R-squared (0.98) but low adjusted R-squared (0.64) points to overfitting.
Most coefficients are insignificant, suggesting spurious associations.
Model Assumptions:
Residuals vs fitted plot shows non-random pattern in residuals, suggesting violation of homoscedasticity and independence assumptions. No way to assess linearity and normality with so many indicator variables.
Influential Observations:
InvoiceDate11/11/2011 17:01 has a very large, significant coefficient (-208). Indicates potential outlier driving model.
Collinearity:
Invoice date indicators likely highly collinear, leading to unstable coefficients.
# Influence
cooksd <- cooks.distance(model)
plot(cooksd, pch="*", cex=2, main="Influential Obs by Cooks distance")
abline(h = 4*mean(cooksd, na.rm=T), col="red") 
Key things about the Cook’s Distance plot:
Cook’s Distance measures the influence of individual observations on the model coefficients.
It identifies points that are outliers or have high leverage.
The plot shows the Cook’s Distance value for each observation.
The red horizontal line represents a cutoff for high influence (typically 4/n or 1).
Any points above the red line have high influence on the model.
So the Cook’s Distance plot shows all points a flat red horizontal line, it means:
No observations have high leverage or outlier values.
No single point is skewing or heavily influencing the model coefficients.
There are likely no highly influential cases biasing the model.
This is a good sign and suggests your model is likely stable without any extreme observations distorting the fit.
Interpretation of Invoice Date Coefficient:
# Interpretation
coef(model)[2] #Coeff for InvoiceDate## InvoiceDate1/10/2011 13:22
## -14confint(model, level=0.95)[2,] #CI for InvoiceDate## 2.5 % 97.5 %
## -57.96032 29.96032Interpreting the coefficient and confidence interval for the InvoiceDate1/10/2011 13:22 variable from the model output. Here are a few points on interpreting this properly:
The coefficient estimate is:
-14
This suggests that on average, controlling for other variables, transactions on 1/10/2011 13:22 are associated with a Quantity 14 units lower compared to the baseline level (which I assume is the first invoice date in the data).
The 95% confidence interval is:
(-57.96032 , 29.96032)
This means we can be 95% confident the true effect of this invoice date on Quantity lies between -57.96032 and 29.96032 units of Quantity.
Since the confidence interval contains 0, this indicates the effect is not statistically significant at the 5% significance level.
The p-value would provide the significance test. A p-value > 0.05 indicates the coefficient is not significantly different from 0.
In summary:
- The coefficient suggests a negative effect on Quantity for this date.
- But the confidence interval and likely high p-value imply the effect is not statistically significant.
- We cannot reject the null hypothesis of no effect based on this invoice date alone.