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10th Class Mathematics Statistics Question Bank Statistics and Probability

  • question_answer
    The given histogram shows a frequency distribution of marks obtained by 56 students in a subject. Number of students securing marks between 70 and 100 is

    A)  2                                            

    B)  4

    C)  6                              

    D)         8

    Correct Answer: C

    Solution :

     Frequency density \[\text{=}\frac{\text{Frequency in the class}}{\text{Length of the class interval}}\]                 \[\therefore \] \[0.2=\frac{\text{Frequency in the class}}{100-70}\]                 or Frequency in the class \[=0.2\times 30=6\]


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