With a topic of z-scores, Which score indicates the highest relative position?

Question

A) A score of 3.2 on a test with mean=4.6 and s=1.5

B) A score of 630 on a test with mean=800 and s=200

C) A score of 43 on a test with mean=50 and s=5

D) A score of 16 on a test with mean=18 and s=1.5

Answer 1

z = (X - μ)/s where X is the score, μ is the mean and s is the standard deviation.

 

Use this formula to calculate the z-score for each of the choices. The answer to this question is the one with the highest z-score.

 

The answer is C.