Chris wants to calculate a z-score for his own height.The average height in the class is 66 inches,and Chris's height is 62 inches.Chris calculated his z-score to be +1.5.What's wrong with his calculation?
A)The z-score is an inappropriate calculation here.
B)The z-score should be a higher number.
C)He didn't have the standard deviation.
D)The z-score should be a negative number.

Question

Quizplus · Accepted Answer

Chris's z-score should be a negative number since he is shorter than the average height. The formula for calculating the z-score is (X - μ)/σ, where X is Chris's height, μ is the mean height, and σ is the standard deviation. However, Chris did not provide the standard deviation, so the z-score calculation cannot be completed accurately.

Chris Wants to Calculate a Z-Score for His Own Height