JARI Test 23

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