Given a person with a z score of 0 on a norm-referenced assessment, what can we conclude regarding her performance? Compared to the norm group,
A) the person performed poorly.
B) the person performed at the mean.
C) the person performed above average.
D) the person performed at the 34 percentile.

Question

Quizplus · Accepted Answer

A z score of 0 represents the mean of the norm group, indicating that the person performed at the same level as the average of the norm group. Therefore, option B is the correct answer. Option A is incorrect because a z score less than 0 would indicate poor performance. Option C is incorrect because a z score greater than 0 would indicate above-average performance. Option D is incorrect because a z score of 0 would correspond to the 50th percentile.

Given a Person with a Z Score of 0 on a Norm-Referenced