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30 July, 07:43

Which of the following best describes the change in the mean when 1213 is included in the data set below?

26, 34, 38, 49, 65, 76, 81

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  1. 30 July, 07:51
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    Step-by-step explanation:

    Given in the data set as

    26, 34, 38, 49, 65, 76, 81

    Sum = 369

    No of entries = 7

    Mean = 52.71

    When 1213 is included

    New sum = 1582

    No of entries = 8

    New mean = 197.75

    Thus mean increases by 145.04
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