Ordinary Least Squares, P Value, Regression, Statsmodels.
our case AGE). Then refit the model. Check again the results of the p-values, R2 score for train AND test sets. Repeat again until you find all p-values less than 0.05, and compare the R2 scores. If you do this exercise you will see that the R2 score for the test sets will improve: 0.463. There are