In a second-order polynomial regression model,the regression coefficient,B₂,will be positive if the parabola opens downward and negative when the parabola opens upward.

Question

Quizplus · Accepted Answer

The regression coefficient B₂ represents the slope of the quadratic equation. In a second-order polynomial model, the sign of the coefficient determines the direction of the curvature of the parabola. If the coefficient is positive, the parabola opens upward, and if it is negative, the parabola opens downward, which is the opposite of what is stated in the question.

In a Second-Order Polynomial Regression Model,the Regression Coefficient,B2,will Be Positive

In a Second-Order Polynomial Regression Model,the Regression Coefficient,B₂,will Be Positive