In the z-score formula, which of the following is true if the value in the numerator is a negative value?
A) that the xi value lies to the left of the mean
B) that the mean is of lesser value than the xi value
C) that the mean is of negative value
D) that the numerator value cannot be divided by the standard deviation

Question

Quizplus · Accepted Answer

If the value in the numerator is negative, it means that the xi value is less than the mean. Since z-score measures the distance of an observation from the mean in terms of standard deviations, a negative value indicates that the observation is located to the left of the mean on the distribution.

In the Z-Score Formula, Which of the Following Is True