# Question: Consider the following frequency distribution for a sample of 40

Consider the following frequency distribution for a sample of 40 observations:

Class Frequency

0â€“4 ............. 5

5â€“9 ............. 8

10â€“14 ........... 11

15â€“19 ........... 9

20â€“24 ........... 7

a. Calculate the sample mean.

b. Calculate the sample variance and sample standard deviation.

Class Frequency

0â€“4 ............. 5

5â€“9 ............. 8

10â€“14 ........... 11

15â€“19 ........... 9

20â€“24 ........... 7

a. Calculate the sample mean.

b. Calculate the sample variance and sample standard deviation.

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