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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 10

  • question_answer
    The mean deviation from the mean of the data 3, 10, 10, 4, 7, 10, 5 is

    A) 2         

    B) 2.57  

    C) 3                     

    D) 3.75

    Correct Answer: B

    Solution :

    [b]: Given data is 3, 10, 10, 4. 7, 10, 5 Here, n=7 Mean \[=\overline{x}=\frac{3+10+10+4+7+10+5}{7}=\frac{49}{7}=7\] Mean deviation from mean \[=\frac{\Sigma \left| {{x}_{i}}-\overline{x} \right|}{n}\] \[=\frac{4+3+3+3+3+2}{7}=\frac{18}{7}=2.57\]


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