To find the correlation and regression of the given data using R language

 

Aim: To find the correlation and regression of the given data.

Problem: Find the correlation and regression of the following data and also draw the scatter

diagram.

X     10    12    13    16    17    20    25

Y    19    22    26    27    29    33    37

R - Code:-

> X=c(10,12,13,16,17,20,25)

> Y=c(19,22,26,27,29,33,37)

> r=cor(X,Y, method="pearson")

> cat("Correlation coefficient of the given data =",r,"\n")

Correlation coefficient of the given data = 0.9801983

> Rho=cor(X,Y, method="spearman")

> cat("Rank Correlation coefficient of the given data =",Rho,"\n")

Rank Correlation coefficient of the given data = 1

> plot(X,Y, main="Scatter Plot",xlab="X Data", ylab="Y Data", col="blue",pch="*"

+ )

> scatter.smooth(X,Y,main=”Scatter diagram”, col.=”blue”)