The assumption of homoscedasticity is that _________.
A) the range of the Y scores is the same as the X scores
B) the X and Y distributions have the same mean values
C) the variability of Y doesn't change over the X scores
D) the variability of the X and Y distributions is the same

Question

Quizplus · Accepted Answer

Homoscedasticity means that the variability of Y doesn't change over different values of X, meaning that the variance of the dependent variable is constant across all levels of the independent variable. Therefore, choice C is the correct answer. Choices A and B are incorrect because they refer to the range and mean of the X and Y scores, which are not related to the assumption of homoscedasticity. Choice D is also incorrect because it refers to the equality of variability between the X and Y distributions, which is not a requirement for homoscedasticity.

The Assumption of Homoscedasticity Is That _________