Last month we explored how to model a simple relationship between two variables, such as the dependence of weight on height 1. In the more realistic scenario of dependence on several variables, we can ...

Dr. James McCaffrey presents a complete end-to-end demonstration of linear regression with two-way interactions between ...

At times it is desirable to have independent variables in the model that are qualitative rather than quantitative. This is easily handled in a regression framework. Regression uses qualitative ...

Researchers encountering wrong signs on regression coefficients are inclined to blame their variable list rather than measurement error. It is generally assumed that ...

This is a preview. Log in through your library . Abstract Let y be a vector of endogenous variables and let w be a vector of covariates, parameters, and errors or unobservables that together are ...