Session#-3 -: 22nd Jan,2013

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.