The expression instructs us to _______.
A) sum the scores.
B) sum the scores and then subtract the mean.
C) subtract every "ith" score from the mean.
D) subtract the mean from each score and add up the deviations.

Question

The expression  instructs us to _______.
A) sum the scores. 
B) sum the scores and then subtract the mean. 
C) subtract every "ith" score from the mean. 
D) subtract the mean from each score and add up the deviations.

Quizplus · Accepted Answer

The expression contains the term "subtract the mean" which suggests that we are dealing with deviations from the mean. Option D is the only choice that involves subtracting the mean from each score and adding up the deviations. Therefore, D is the best choice for this expression.

The Expression Instructs Us to _______