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10th Class Mathematics Statistics Question Bank Statistics and Probability

  • question_answer
    The following numbers are given 61, 62, 63, 61, 63,64, 64, 60, 6^, 63, 64, 65, 66, 64. The, difference between their mean and median is

    A)  0.4                        

    B)         0.3  

    C)  0.2                        

    D)         0.1

    Correct Answer: B

    Solution :

     Frequencies of the various numbers are given below:
    Number Frequency
    60 1
    61 2
    62 1
    63 3
    64 4
    65 2
    66 1
    Mean \[=\frac{60.1+61+62.1+63.3+64.4+65.2+66.1}{14}\]\[=63.2\] Median = Frequency of the middle number                 \[=\frac{63+64}{2}\]                 \[=63.5\] \[\therefore \]  Difference \[=0.3\]


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