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(1,405 posts)
15. Although I understand where you're coming from, and this would hold
Wed Apr 24, 2024, 12:35 AM
Apr 24

true for, say, annual incomes, I believe the IQ numbers use a standardization formula where the mean and the median are the same.

"In this method, psychometricians utilize a process known as standardization to make it possible to compare and interpret the meaning of IQ scores. This process is accomplished by administering the test to a representative sample and using these scores to establish standards, usually referred to as norms, by which all individual scores can be compared.

Because the median score is 100, experts can quickly assess individual test scores against the median to determine where these scores fall on the normal distribution. This means 50% of the scores fall above and below the median. In the case of IQ scores, both the mean and median score is 100. Classification systems can vary from one publisher to the next although many do tend to follow a fairly similar rating system."


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