Kenny received a raw score of 42. Given the test had a mean of 48, a median of 48, and a standard deviation of 3. Given Kenny's information above, what is his T score?
A) 20
B) 30
C) 50
D) 60

Question

Quizplus · Accepted Answer

To calculate Kenny's T-score, use the formula: T-score = 50 + (10 x z-score). 
To get the z-score, use the formula: z-score = (raw score - mean) / standard deviation.
Plugging in the values given, we get: 
z-score = (42 - 48) / 3 = -2.00 
T-score = 50 + (10 x -2.00) = 30 
Therefore, Kenny's T-score is 30.

Kenny Received a Raw Score of 42