Current IQ test scores are standardized using a mean of ______ and a standard deviation of __________.

Question

Quizplus · Accepted Answer

The mean IQ score is set at 100 and the standard deviation is set at 15. This is based on the normal distribution of IQ scores, where 68% of the population falls within one standard deviation of the mean, and 95% falls within two standard deviations of the mean. This standardization allows for comparisons to be made between individuals and different populations. Choice D correctly identifies both the mean and standard deviation used in current IQ testing.

Current IQ Test Scores Are Standardized Using a Mean of ______