An intelligence quotient is a(n):
a. midpoint in a set of intelligence test scores that is computed after the scores are ordered from the highest to the lowest.
b. measure of the variability of intelligence test scores that is computed by taking every score in the distribution and determining how much it differs from the mean.
c. statistical estimate of the proportion of the total variance in intelligence that is attributable to genetic differences among individuals within a group.
d. measure of intelligence originally computed by dividing a person's mental age by his or her chronological age and multiplying the result by 100.
Answer: d. measure of intelligence originally computed by dividing a person's mental age by his or her chronological age and multiplying the result by 100.
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