Problem while solving Big Mart problem using Linear Regression

linear_regression
big_mart_sales

#1

Hi all

I have a doubt when i train the dataset with new features in big mart problem with linear regression I am getting R squared value .8246 and rmse 977.008 but when i validate the dataset i am getting rmse of 2776

Why this is happening ?

thanks
aman


#2

Hi @aman1391

It seems you did not have a linear relation between you response and predicators.

Good luck

Alain