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9th Class Mathematics Statistics Question Bank Statistics

  • question_answer
    The mean of 50 observations was 250. It was detected on checking that the value of 165 was wrongly copied as 115 for computation of mean. Find the correct mean.

    A)  215                            

    B)  151                

    C)    156                

    D)    251                

    Correct Answer: D

    Solution :

    Not Available


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