Heteroscedasticity occurs when
A)there is a nonlinear relationship between the X and Y scores.
B)the scores are spread out to the same degree at every X.
C)the Y scores are spread out to the same degree at every X.
D)the Y scores have a different degree of spread at different Xs.

Question

Heteroscedasticity occurs when
A)there is a nonlinear relationship between the X and Y scores. 
B)the scores are spread out to the same degree at every X. 
C)the Y scores are spread out to the same degree at every X. 
D)the Y scores have a different degree of spread at different Xs.

Quizplus · Accepted Answer

Heteroscedasticity occurs when the Y scores have a different degree of spread at different Xs, meaning the variance of the residuals is not constant across the range of the predictor variable. This violates the assumption of homoscedasticity, which assumes that the variance of the residuals is constant across all values of the predictor variable.

Heteroscedasticity Occurs When