Question

Consider the following frequency distribution for a sample of 40 observations:
Class Frequency
0–4 ............. 5
5–9 ............. 8
10–14 ........... 11
15–19 ........... 9
20–24 ........... 7
a. Calculate the sample mean.
b. Calculate the sample variance and sample standard deviation.


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  • CreatedJuly 06, 2015
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