Josh's z-score on a test is -0.5. Which of the following options must be true?
A) Josh scored better than 65% of other test takers.
B) Josh scored better than 25% of other test takers.
C) Josh scored worse than 16% of other test takers.
D) Josh scored worse than 72% of other test takers.

Question

Quizplus · Accepted Answer

A z-score of -0.5 indicates that Josh's score is below the mean, but not by a large margin. It typically corresponds to being higher than about 30% of the distribution (though the exact percentage can vary slightly depending on the source). Therefore, the statement that Josh scored better than 25% of other test takers is the most accurate among the given options.

Josh's Z-Score on a Test Is -0