IQ scores are derived from standard scores, and to calculate a standard score you need to know

Question

Quizplus · Accepted Answer

To calculate a standard score, you need to know the mean and standard deviation of the distribution. IQ scores are typically calculated as standard scores, with a mean of 100 and a standard deviation of 15. Knowing the mean and standard deviation allows you to convert raw scores into standard scores, which can be compared across different populations and time periods. The mode and median are not used in the calculation of standard scores, and while the normal distribution is important for understanding the properties of standard scores, it is not sufficient for calculating them.

IQ Scores Are Derived from Standard Scores, and to Calculate