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    Question

    Find the value of 'a' in the given data if the mean of

    the given data is 20. 10, 15, 18, 22, 24, 19, 21, a, 16, 25
    A 30 Correct Answer Incorrect Answer
    B 31 Correct Answer Incorrect Answer
    C 32 Correct Answer Incorrect Answer
    D 33 Correct Answer Incorrect Answer

    Solution

    Sum of each term of given data = 10 Ă— 20 = 200 So, 10 + 15 + 18 + 22 + 24 + 19 + 21 + a + 16 + 25 = 200 Or, 170 + a = 200 Or, 'a' = 30 Hence, option A.

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