Sixty-eight percent of all people have an IQ score between:

Question

Quizplus · Accepted Answer

According to the statistical concept of normal distribution, about 68% of all scores fall within one standard deviation of the mean. In this case, if the mean IQ score is considered to be 100 with a standard deviation of 15, then scores between 85 and 115 (one standard deviation below and above the mean) would encompass 68% of all scores. Therefore, choice B (85-115) is the best option.

Sixty-Eight Percent of All People Have an IQ Score Between