What is an intelligence quotient?

A) Ratio of a person's mental age and chronological age
B) Ratio of a person's developmental age and chronological age
C) Ratio of mental age and academic achievement grade level
D) Ratio of a person's chronological age and academic achievement grade level

Intelligence Quotient

A measure of a person's intellectual abilities in relation to an average score, usually determined by standardized tests.

Mental Age

A measure of an individual's mental ability expressed as the age at which an average individual reaches the same level of performance.

Chronological Age

The actual age of an individual as measured in years from the date of birth.