What causes brownish stains under armpits of a white shirt and how do you get rid of it? is it cause by deodorant? or is that just sweat or both? what can i use to make my shirts armpits turn white again?
MULTIPLE REGRESSION measures the effect a group of survey questions (called the independent variables) has on a single survey question (or an average of a group of questions), called the dependent variable.
Hierarchical regression is the practice of building successive linear regression models, each adding more predictors. For example, one common practice is to start by adding only demographic control variables to the model in one step.