Executive Summary

Our company recently measued the iris flower and get the iris dataset. We would like know more.

INtroduction

Our company recently measued the iris flower and get the iris dataset. We would like know more. How are the variables correlated to each other? What is the distribution of each variable? How ttest of each variabnle?

Dtaa Soruce

measued the iris flower and get the iris dataset

tKey Findings

How are the variables correlated to each other?

Corrleation matrix

##              sepal_length sepal_width petal_length petal_width
## sepal_length    1.0000000  -0.1181293    0.8737381   0.8206195
## sepal_width    -0.1181293   1.0000000   -0.4260283  -0.3628942
## petal_length    0.8737381  -0.4260283    1.0000000   0.9627723
## petal_width     0.8206195  -0.3628942    0.9627723   1.0000000

Correlation Test: Petal Length, Petal Width

## 
## Pearson
## [1] 0.9627723
## 
## Spearman
## [1] 0.9376545
## 
## Kendall
## [1] 0.8065882
Table continues below
estimate statistic p.value parameter conf.low conf.high
0.9628 43.18 2.082e-85 147 0.9489 0.9729
method alternative
Pearson’s product-moment correlation two.sided

Correlation Test: Sepal Length, Sepal Width

## 
## Pearson
## [1] -0.1181293
## 
## Spearman
## [1] -0.1681023
## 
## Kendall
## [1] -0.0786184
Table continues below
estimate statistic p.value parameter conf.low conf.high
-0.1181 -1.442 0.1513 147 -0.2737 0.0435
method alternative
Pearson’s product-moment correlation two.sided

Data Visulaization

What is the distribution of each variable?

Normality Test: Petal length

## 
## ---------------
## Variable: petal_length
## ---------------
## 
## Normality Test
statistic p.value method
0.8768 8.635e-10 Shapiro-Wilk normality test

Normality Test: Petal Width

## 
## ---------------
## Variable: petal_width
## ---------------
## 
## Normality Test
statistic p.value method
0.9019 1.853e-08 Shapiro-Wilk normality test

Normality Test: Sepal length

## 
## ---------------
## Variable: sepal_length
## ---------------
## 
## Normality Test
statistic p.value method
0.9756 0.009234 Shapiro-Wilk normality test

Normality Test: Sepal Width

## 
## ---------------
## Variable: sepal_width
## ---------------
## 
## Normality Test
statistic p.value method
0.985 0.1062 Shapiro-Wilk normality test

How ttest of each variable

Wilcoxon: Sepal length, Speal…

statistic p.value method alternative
22199 0 Wilcoxon rank sum test with continuity correction two.sided