Fewer than 50% of the cases may ever fall between two z scores of the same sign.

Question

Quizplus · Accepted Answer

This statement is true. Less than half of the cases fall between two z scores of the same sign because the distribution of the standard normal curve is symmetrical around the mean, resulting in an equal number of cases falling on either side of the mean. Therefore, only half of the cases fall between any two z scores, and less than half of those cases will have the same sign.

Fewer Than 50% of the Cases May Ever Fall Between