Which of the following is the equivalent T score for an IQ score of 115 on an IQ test that has a mean of 100 and a standard deviation of 15?
A) 40
B) 50
C) 60
D) 70

Question

Quizplus · Accepted Answer

To find the T score, we use the formula T = 10(Z) + 50, where Z is the z-score equivalent of the IQ score. First, we convert the IQ score of 115 to a z-score using the formula (X - μ) / σ = (115 - 100) / 15 = 1. We plug this value into the T score formula: T = 10(1) + 50 = 60. Therefore, the answer is (C) 60.

Which of the Following Is the Equivalent T Score for an IQ