In a first-order model with two predictors x₁ and x₂,an interaction term may be used when the relationship between the dependent variable y and the predictor variables is linear.

Question

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An interaction term is used when the effect of one predictor on the dependent variable depends on the level of another predictor, indicating a non-linear relationship between predictors and the dependent variable.

In a First-Order Model with Two Predictors X1 and X2,an

In a First-Order Model with Two Predictors X₁ and X₂,an