Executive Summary

Our company recently measured the iris flower and get the iris dataset.

Introduction

Our company recently measured the iris flower and get the iris dataset. - How are the variables correlated to each other? - What is the distribution of each variable? - How same are the variables?

Data Source

measured the iris flower and get the iris dataset.

Key Findings

- How are the variables correlated to each other?

Correlation 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: 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: 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

Plots

What is the distribution of each variable?

Normality: Petal Length

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

Normality: Petal Width

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

Normality: Sepal Length

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

Normality: Sepal Width

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

- How same are the variables?

Wilcoxon: Petal Length, Petal Width

statistic p.value method alternative
19099 0 Wilcoxon rank sum test with continuity correction two.sided

Wilcoxon: Sepal Length, Sepal Width

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