Which of the following is not true concerning the attributes of z-scores?
A) z-scores are positive for data values above the mean of the distribution.
B) z-scores are negative for data values below the mean of the distribution.
C) z-scores can be positive or negative for data values above the mean of the distribution.
D) z-scores are equal to zero for data values equal to the mean of the distribution.

Question

Quizplus · Accepted Answer

Z-scores are standardized scores that indicate how many standard deviations an element is from the mean. A z-score is positive if the data value is above the mean, negative if below the mean, and zero if it's exactly at the mean. Therefore, it's not possible for z-scores to be both positive or negative for data values above the mean, making option C incorrect.

Which of the Following Is Not True Concerning the Attributes