A child with a mental age of 9 and a chronological age of 12 has an IQ of
A)120.
B)75.
C)100.
D)90.

Name: A child with a mental age of 9 and a chronological age of 12 has an IQ of A)120. B)75. C)100. D)90.
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Question

Quizplus · Accepted Answer

To calculate the IQ, we need to divide the mental age by the chronological age and then multiply by 100. 
In this case, MA/CA * 100 = 9/12 * 100 = 75. 
Therefore, the child has an IQ of 75, which is below average.

A Child with a Mental Age of 9 and a Chronological