z statistic where x is score
z = (x - mean)/SD
x = z*SD + mean
z for 80th percentile 0.84
given mean = 100 and SD = 16
x = 0.84 * 16 + 100 = 113.44
Henry W.
asked 02/14/21Standard deviation 16
Mean Score 100
z statistic where x is score
z = (x - mean)/SD
x = z*SD + mean
z for 80th percentile 0.84
given mean = 100 and SD = 16
x = 0.84 * 16 + 100 = 113.44
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