The quadratic regression model = b₀ + b₁x + b₂x² allows for one sign change in the slope capturing the influence of x on y.

Question

Quizplus · Accepted Answer

The term "one sign change in the slope" refers to the possibility of the linear coefficient (b₁) being positive or negative. This allows for the model to capture both a positive and negative relationship between x and y. Therefore, the statement is true.

The Quadratic Regression Model = B0 + B1x

The Quadratic Regression Model = B₀ + B₁x