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11th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-10

  • question_answer
    Mean and standard deviation of 100 observations were found to be 40 and 10, respectively. If at the time of calculation two observations were wrongly taken as 30 and 70 in place of 3 and 27, respectively, find the correct standard deviation.

    A)  11.34              

    B)  10.24

    C)  16.44              

    D)  9.34

    E)  None of these

    Correct Answer: B

    Solution :

     Not Available


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