9th Class Mathematics Sample Paper Mathematics Sample Paper-5

  • question_answer The mean of 10 observations is 18.25. On rechecking it was found that 16 was misread as 21. Find the correct mean if it is replaced by 16.

    A) 16.5                   

    B)      17.75

    C) 15.25                  

    D)   15.75

    E) None of these

    Correct Answer: B

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