Percentage of data points that actually lie within 2 standard deviation of the mean

Statistics
Tutor: None Selected Time limit: 1 Day

May 15th, 2015

The mean is (5+10+10+10+10+10+10)/8= 10

sigma/stdev = 2.7

10+2(2.7)=15.4

10-2(2.7) = 4.3

100% of the points are within this range.

May 15th, 2015

How do you find the standard deviation??

May 15th, 2015

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May 15th, 2015
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May 15th, 2015
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