Using the Stanford-Binet IQ formula,what IQ would a person have whose mental age is 10 and whose chronological age is 15?
A)150
B)1.50
C)0.67
D)67

Question

Quizplus · Accepted Answer

The Stanford-Binet IQ formula calculates IQ by dividing mental age by chronological age and multiplying by 100.

So, for a person with a mental age of 10 and a chronological age of 15:

IQ = (10/15) x 100 = 66.67, which can be rounded up to 67.

Therefore, the correct answer is D.

Using the Stanford-Binet IQ Formula,what IQ Would a Person Have