Suppose that the sample regression line of the first-order model is .If we examine the relationship between y and x₁ for three different values of x₂,we observe that the effect of x₁ on y remains the same no matter what the value of x₂.

Question

Quizplus · Accepted Answer

The statement implies that the slope of the sample regression line is constant for all values of x₂, which would indicate a linear relationship between x₁ and y that does not depend on the value of x₂. This is consistent with the assumptions of the first-order model, which assumes a constant or homogeneous effect of the independent variable on the dependent variable. Therefore, the answer is true.

Suppose That the Sample Regression Line of the First-Order Model