What percentage of all scores fall below a z score of +1?
A)16%
B)34%
C)50%
D)84%

Name: What percentage of all scores fall below a z score of +1? A)16% B)34% C)50% D)84%
Brand: Quizplus
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Question

Quizplus · Accepted Answer

In a standard normal distribution, a z-score of +1 is one standard deviation above the mean. Approximately 34% of scores lie between the mean and a z-score of +1, and since about 50% of scores are below the mean, adding these percentages gives us 84% of scores falling below a z-score of +1.

What Percentage of All Scores Fall Below a Z Score