38 The table below shows the final examination scores for Mr. Spear’s class last year.
Test Score
Frequency
72
1
76
1
79
4
83
5
85
7
88
5
94
3
Find the population standard deviation based on these data, to the nearest hundredth.
Determine the number of students whose scores are within one population standard deviation of
the mean.
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[OVER]
Algebra 2/Trigonometry – June ’15