Assignment 1 (a) -Groove Milage Data

Fit ‘lm’ and comment on the applicability of ‘lm’

Plot1: Residual vs Independent curve

Plot2: Standard Residual vs independent curve

As the plot is parabolic, so we will not be able to do regression.

Assignment 1 (b) -Alpha-Pluto Data

Fit ‘lm’ and comment on the applicability of ‘lm’

Plot1: Residual vs Independent curve

Plot2: Standard Residual vs independent curve

Also do:

Qq plot

Qqline

As this is a random plot, thus we can have regression.

QQPlot

 QQLine

Assignment 2: Justify Null Hypothesis using ANOVA

p value=0.687

Since p-value is greater than 5%, we cannot reject the null hypothesis.