Approximately what percentage of people will have IQ scores between 85 and 115?:
IQ test scores have a normal distribution with a mean of 100 and a standard deviation of 15. Approximately 68% people have an IQ between 85 and 115. Consider an IQ test, with a mean of 100 and a standard deviation of 15. What percent of people score above 115? Because intelligence scores fall on a normal curve, about 34 percent of the scores fall between the mean and one standard deviation (in this case 15 points) above the mean. IQ test scores have a normal distribution with a mean of 100 and a standard deviation of 15. Approximately 68% people have an IQ between 85 and 115. Added 7/18/2013 1:30:06 PM. Approximately what proportion of people have an IQ between 85 and 115? IQ test scores have a normal distribution with a mean of 100 and a standard deviation of 15. Roughly 68% of the population has an IQ between 85 and 115. The average range between 70 and 130, and represents about 95% of the population. A score below 70 may indicate problems in understanding the iQ questions or soem type or retardation, and a score above 130 may indicate intellectual giftedness. An administrator wants to determine whatpercent of the examinees should score between 1 SD above (100 + 15 = 115 IQ) and1 SD below (100 - 15 = 85 IQ) the mean. Since the percent area under thecurve equals the percent frequency of scores, 68.26% (34.13% x 2) of thestudents should score between 85 and 115 on the IQ test. IQ test scores have a normal distribution with a mean of 100 and a standard deviation of 15. Approximately what proportion of people have an IQ between 85 and 115? IQ test scores have a normal distribution with a mean of 100 and a standard deviation of 15. Since the percent area under thecurve equals the percent frequency of scores, 68.26% (34.13% x 2) of thestudents should score between 85 and 115 on the IQ test. In addition, 15.87%(50% - 34.13% = 15.87%) will score above a score 115 and below 85. On the same IQ test, one second-grader received a score of 145. A normal intelligence quotient (IQ) ranges from 85 to 115 (According to the Stanford-Binet scale). Only approximately 1% of the people in the world have an IQ of 135 or over. Genius or near-genius IQ is considered to start around 140 to 145. Less than 1/4 of 1 percent falls into this category. User: IQ test scores have a normal distribution with a mean of 100 and a standard deviation of 15. Approximately what proportion of people have an IQ between 85 and 115?
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