FIGURE 7-
Calculating the Percentile for a Positive z Score
Drawing curves helps us find someone’s percentile rank. For Jessica’s positive z score of 0.98, add the 50% below the mean to the 33.65% between the mean and her z score of 0.98; Jessica’s percentile rank is 83.65%.
Calculating the Percentile for a Positive z Score
Drawing curves helps us find someone’s percentile rank. For Jessica’s positive z score of 0.98, add the 50% below the mean to the 33.65% between the mean and her z score of 0.98; Jessica’s percentile rank is 83.65%.