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    Question

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

    the given data is 24. 18, 22, 28, 25, 20, 26, 30, a, 19, 24
    A 26 Correct Answer Incorrect Answer
    B 27 Correct Answer Incorrect Answer
    C 28 Correct Answer Incorrect Answer
    D 29 Correct Answer Incorrect Answer

    Solution

    Sum of each term of given data = 10 × 24 = 240 So, 18 + 22 + 28 + 25 + 20 + 26 + 30 + a + 19 + 24 = 240 Or, 212 + a = 240 Or, 'a' = 28 Hence, option C.

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