10.3.1 Scatterplot matrix. Recall that we use SAS’s scatterplot matrix feature to quickly scan for pairs of explanatory variables that might be colinear. To do this in R we must first make sure we ...

Learn the purpose of a partial F-test in multiple regression and how to compare two nested models with different variables or interactions. Sign in to view more content ...

Model MSE is ESS divided by the degrees of freedom of the model. The degrees of freedom of the model is just the number of independent variables, which is 1 for a simple linear regression. Therefore ...

The formulas break down at the two largest allowable d values (d = n – p – 1 and d = n – p, the 1 and 0 degrees of freedom cases), and numerical instabilities are observed at these points. An ...

A standardized regression coefficient is created by transforming all variables in the model to have a mean of zero and a standard deviation of 1.0. This allows the standardized coefficients to be ...