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4 November, 08:12

A librarian recorded the number of books that were checked out on each of the last 9 days, as shown below. 142, 136, 125, 148, 150, 152, 115, 131, 136 What is the mean of the data set? a 137.22 b 1, 235 c None of these d 9

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  1. 4 November, 09:05
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    The answer is A. 137.22
  2. 4 November, 11:32
    0
    Mean is the sum of values divided by the count of values.

    The sum of values is 1,235.

    There are 9 values.

    1235/9 = 137.22
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