Topic 6: Standard Scores

2. Find the Z score by looking up the percentile rank in Table 1. 3. Convert the Z score of 1.65 into an X, using Corty’s Equation 4.2 (X = µ + (Z * σ) (p105) X = 100 + (1.65*15) = 124.75 or 125 since IQ scores are reported to the nearest whole number. Extreme percentages exercise on p. 123 ................
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