Posted by **Jennifer** on Sunday, October 16, 2011 at 6:37pm.

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work.

Errors Frequency

51-53 9

54-56 19

57-59 16

60-62 24

63-65 25

This is what I got:

Mean = 59.19

Variance = 1.43

Standard Deviation = 2.05

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