how to choose terms when a model is linear when choosing a model term, should we first test the significance of the main effects, then consider the possible interactions between them. what is important when selecting a term which term is selected first when testing for a significant difference? which term of choice should we use in a linear model can you include a term in a model definition of terms in a model what is terms selection in a model how does term selection affect the model what's the difference between a term selection and an interaction? what terms do you use in a linear equation model? what type of terms are used for a linear model how can a term be selected in a model? why select term in a regression model what type of models should you do first to test for the main effect how to select terms in a model what is the definition of term selection in a math model? how to select term in a linear model what is the importance of the term in selecting terms when selecting terms to include in a linear model, should we always test the significance of the main effect first, then consider the possible interactions between them?