FIGURE 7-
Calculating the Percentage Above a Negative z Score
For a negative z score, we add the percentage between the mean and that z score to 50% (the percentage above the mean) to get the percentage above that z score. Here we add the 46.56% between the mean and the z score of –1.82 to the 50% above the mean, which yields 96.56%.
Calculating the Percentage Above a Negative z Score
For a negative z score, we add the percentage between the mean and that z score to 50% (the percentage above the mean) to get the percentage above that z score. Here we add the 46.56% between the mean and the z score of –1.82 to the 50% above the mean, which yields 96.56%.