The following table gives the frequency distribution of the numbers of computers sold during the past 25

Question:

The following table gives the frequency of the numbers of computers sold during the past 25 weeks at an electronics store.
Computers Sold Frequency
4 to 9............ 2
10 to 15........... 4
16 to 21........... 10
22 to 27........... 6
28 to 33........... 3
a. What does the frequency column in the table represent?
b. Calculate the mean, variance, and standard deviation. Distribution
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