LINEAR REGRESSION : WALMART DATASET

PREDICT CUSTOMER SATISFACTION OF WALMART 

In this case we have to predict a model that gives customer satisfaction for Walmart.

We use Linear Regression here.

R Code

#DATA LOAD

#DIVIDE TRAIN AND TEST DATA(80:20)

#BUILD LINEAR MODEL ON TRAIN DATASET

#CHECK CORRELATED VARIABLES USING STEP FUNCTION

#durbinWatson TEST TO CHECK CORRELATION

#CHECKING NORMALITY OF THE RESIDUALS

#CHECKING HOMOCEDASTICITY

#PLOT TO CHECK LINEARITY

##PREDICTION