Mathematics, 10.12.2020 03:00, 21megoplin

The graph shows the scores of an exam. The mean is 84. The standard deviation is 2.5. About what percent of students scored within one standard deviation of the mean? A. 45%
B. 68%
C. 75%
D. 32%

The graph shows the scores of an exam. The mean is 84. The standard deviation is 2.5. About what pe

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The graph shows the scores of an exam. The mean is 84. The standard deviation is 2.5. About what per...