Question: Table 8 gives the relative frequency distribution for the weekly sales of two businesses. (a) Compute the population mean and the variance for each business.

Table 8 gives the relative frequency for the weekly sales of two businesses.

(a) Compute the population mean and the variance for each business.
(b) Which business has the better sales record?
(c) Which business has the more consistent sales record?

Table 8 Relative Frequency Sales Business A Business B 100 .1 101 .2 .2 102 .3 103 .2 104 105 .2 .2 106 .2 .3

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