The mean of a distribution of differences between means is equal to
A)0
B)1
C)the difference between the sample means
D)the weighted average of the sample means

Question

Quizplus · Accepted Answer

By definition, the distribution of differences between means has a mean of 0. This is because the difference between means is calculated by subtracting two means from each other, and on average, the two means will be equal to each other. Therefore, the sum of differences will cancel out and result in an average of 0.

The Mean of a Distribution of Differences Between Means Is