The only time the standard deviation may equal zero, is when
A) the range is less than 50
B) every score in the distribution is the same
C) the range is negative
D) none of these, since the standard deviation may never be equal to zero

Question

Quizplus · Accepted Answer

The standard deviation is a measure of variability in a distribution, specifically the average distance of scores from the mean. If every score in the distribution is the same, then the distance from each score to the mean is zero, resulting in a standard deviation of zero. However, it is important to note that this is a rare occurrence and not typical of most distributions.

The Only Time the Standard Deviation May Equal Zero, Is