A child?s IQ score on an individual intelligence test varies on the average by approximately five points from one administration of the test to another.

Question

Quizplus · Accepted Answer

IQ scores can vary due to a variety of factors including test conditions, the test-taker's condition on the day of the test, and the inherent measurement error of the test itself. A variation of about five points is considered within the normal range of score fluctuation for individual intelligence tests.

A Child?s IQ Score on an Individual Intelligence Test Varies