Topic 6: Standard Scores

3. Answer: The Zs that identify the extreme 5 percent of the normal distribution are -1.96 and + 1.96. Corty’s worked out examples, p 121. 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. ................
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