Backward Elimination Regression P Value. If PSL go to point d. Select a significance level to stay in the model eg.
This predictor is FO4delay which has a p-value of 099123. This variable is eliminated and the regression is performed again. Jun 07 2018 regressor_OLS smOLS endog y exog X_optfit regressor_OLSsummary Now we have a decision to make we can see that x2 or 5th column has a p-value of 006 or 6.
It can be likened to the process of identifying and removing variables that do not affect the model depending on the p-value.
All variables added at each step the predictor with the largest p-value that is over the alpha-to-remove is being eliminated. Remove if alpha. Start with no variables in the model. Minitab stops when all variables in the model have p-values that are less than or equal to the specified Alpha to remove value.
