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10th Class Mathematics Statistics Question Bank Statistics and Probability

  • question_answer
    Arithmetic mean for the given data is  
    Marks No. of I students
    0 - 10 5
    10 - 20 10
    20 - 30 25
    30 - 40 30
    40 - 50 20
    50 - 60 10
       

    A) 55                         

    B) 35

    C) 33                           

    D) 2

    Correct Answer: C

    Solution :

     
    Mid-values No. of students Product
    5 5 25
    15 10 150
    25 25 625
    35 30 1050
    45 20 900
    55 10 550
      100 3300
    \[\therefore \]  Arithmetic Mean \[=\frac{3300}{100}=33\]


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