Topic 6: Standard Scores

Clayton takes an IQ test which has mean = 100 and standard deviation = 15. He does better than 95% of the population, i.e., his percentile rank is 95. What is his IQ score. 1. Draw a picture. We can see from the picture that Clayton’s IQ is somewhere between 115 and 130. 2. Find the Z score by looking up the percentile rank in Table 1. 3. ................
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