Interaction between two predictor variables is present when the effect on E(y)of a 1-unit increase in $x _ { 2 }$ does not depend on the value of $x _ { 1 }$ ,and vice versa.

Question

Quizplus · Accepted Answer

Interaction between two predictor variables is present when the effect of one predictor variable on the outcome variable changes depending on the value of the other predictor variable. Therefore, the statement in the question is incorrect, and the correct statement would be: "Interaction between two predictor variables is present when the effect on E(y) of a 1-unit increase in $x _ { 2 }$ depends on the value of $x _ { 1 }$, and vice versa."

Interaction Between Two Predictor Variables Is Present When the Effect x2x _ { 2 }x2​

Interaction Between Two Predictor Variables Is Present When the Effect $x _ { 2 }$