5. Find the mode, and the mean of the following set showing number of hours of operating life of
25 flashlight batteries.
20, 21, 19, 22, 18, 23, 25, 22, 23, 20, 23, 20, 22, 21, 24, 21, 22, 23, 19, 21, 22, 22, 24, 26, 22.
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545/25 The mean of numbers
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