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CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2002

  • question_answer
    A batsman scores runs in 10 innings 34, 38, 42, 46, 44, 46, 48, 54, 55, 63, 46. Then the mean deviation is:

    A)  8.6             

    B)                         6.4

    C)                         10.6            

    D)                         9.6

    E)                         7.6

    Correct Answer: B

    Solution :

    Mean, \[M=\frac{\left[ \begin{align}   & 34+38+42+44 \\  & \,\,\,\,\,\,\,\,\,+46+48+54+55+63+46 \\ \end{align} \right]}{10}\] \[=47\]                
    \[{{x}_{i}}\] \[|{{x}_{i}}-M|\]
    34 13
    38 9
    42 5
    44 3
    46 1
    48 1
    54 7
    55 8
    63 16
    46 1
    \[\Sigma |{{x}_{i}}-M|=64\] \[\therefore \]Mean deviation\[=\frac{\Sigma |{{x}_{i}}-M|}{10}\]                                 \[=\frac{64}{10}=6.4\]


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