Cameron is performing a study on the IQ of groups in various areas. He has calculated that the average IQ of Group B is 118 with a standard deviation of 12. What is the z-score for someone with an IQ of 125?
A) 0.98
B) -0.58
C) 0.10
D) 0.58

Question

Quizplus · Accepted Answer

The z-score is calculated by subtracting the mean from the individual score and then dividing by the standard deviation: (125 - 118) / 12 = 0.58.

Cameron Is Performing a Study on the IQ of Groups