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25 December, 16:54

If the mean of the following data is 14 then, find the value of a. 13,15,15, a, 15,11

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  1. 25 December, 16:59
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    Step-by-step explanation:

    Mean is calculated by total sum divided by number

    14 = 13+15+15 + a+15 + 11/6,

    The missing value is given as a;

    14 = 69 + a / 6

    We cross multiply:

    69 + a = 14 x 6

    69 + a = 84

    Subtract 69 from both sides to get the value of a

    69 + a - 69 = 84 - 69

    a = 15
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