On normally distributed curves, which of the following is NOT true?
A) The percentile rank mean is always p = 50.
B) The mean of z scores is always 0.
C) The mean of the standard deviation is 0.
D) The mean of standard scores vary as a function of the type of standard score .
E) The mean of the publisher type score varies as a function of the publisher.

Question

Quizplus · Accepted Answer

The mean of the standard deviation is not zero. The mean of a normally distributed curve is always the same as the median and the mode, but the mean of the standard deviation is not zero.

On Normally Distributed Curves, Which of the Following Is NOT