Larry tells you that his 10-year-old cousin recently completed an intelligence test that translated raw scores into deviation IQ scores. Larry knows that his cousin's score was 120, but he is not sure what this means. You should tell him that his cousin
A)scored below the mean for 10-year-olds.
B)answered 120 questions correctly on the test.
C)scored above the mean for 10-year-olds.
D)scored at the mean for the average 12-year-old.

Question

Larry tells you that his 10-year-old cousin recently completed an intelligence test that translated raw scores into deviation IQ scores. Larry knows that his cousin's score was 120, but he is not sure what this means. You should tell him that his cousin ​
A)scored below the mean for 10-year-olds.
B)answered 120 questions correctly on the test.
C)scored above the mean for 10-year-olds.
D)scored at the mean for the average 12-year-old.

Quizplus · Accepted Answer

Deviation IQ scores are standardized to have a mean of 100 and a standard deviation of 15. A score of 120 indicates performance above the mean for the individual's age group, in this case, 10-year-olds.

Larry Tells You That His 10-Year-Old Cousin Recently Completed an Intelligence