4. The following are the number of books issued in a school library during a week
105, 216, 322, 167, 273, 405, 346
Find the mean number of books issued per day.
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Numbers of book issued during a week = 105, 216, 322, 167, 273, 405, 346
Total number of books issued = 1,834
Mean number of the books issued per day = 1,834 ÷ 7 = 262
Hence, the mean number of the books issued per day in a school library during a week is 262.
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