CFA Practice Question

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CFA Practice Question

The quantity SUM(X - XBAR) is not used as a measure of dispersion because it is ______.

A. always equal to zero
B. always a positive value
C. always a negative value
Correct Answer: A

User Contributed Comments 3

User Comment
hardig ok, not understanding this - what is xbar?
loisliu88 x-bar is the symbol for the sample mean
choas69 x - mean if the value was less than the mean will lead to zero and interrupt the whole thing in which they had to put the ^2
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