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9th Class Mathematics Statistics Question Bank Statistics

  • question_answer
    The mean of first 8 observations is 18 and last 8 observations is 20. If the mean of all 15 observations is 19, find the 8th observation.

    A)  18                              

    B)  12                  

    C)  19                  

    D)    20

    Correct Answer: C

    Solution :

    Not Available


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