Question

220. If a four-year-old girl correctly answered questions on an intelligence exam

similar to a five-year-old girl, she would be said to have a mental age of
five. In this case her intelligence quotient (IQ) would be:
(A) 100
(B) 95
(C) 150
(D) 125
(E) 110

Answer 1

The IQ of a four-year-old girl who correctly answers questions on an intelligence exam similar to a five-year-old girl would be 125. Option D

Step-by-step explanation:

The IQ test measures a person's intelligence quotient, which is derived by comparing an individual's performance on the test to the performance of others in the population.

The average IQ score is 100. In the given scenario, if a four-year-old girl correctly answered questions on an intelligence exam similar to a five-year-old girl, her mental age would be considered as five.

Therefore, her IQ would be calculated by dividing her mental age (five) by her chronological age (four) and multiplying it by 100. The IQ would be (5/4) x 100 = 125 (D).