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10th Class Mathematics Statistics Question Bank Statistics

  • question_answer
    What is the arithmetic mean of 20 fours, 40 fives, 30 sixes and 10 tens?

    A)  50                               

    B)  25            

    C)  5.6           

    D)  33

    Correct Answer: C

    Solution :

    (c): \[AM=\frac{20\times 4+40\times 5+30\times 6+10\times 10}{100}\] \[=\frac{280+280}{100}=5.6\]             


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