2. Questions Bank
  3. 10th Class
  4. Mathematics
  5. Statistics

10th Class Mathematics Statistics Question Bank Statistics

  • question_answer
    The mean of the marks in Statistics of 100 students in class X was 72. The mean of marks for boys was 75, while their number was 70. What is the mean of marks of girls in the class?

    A) 35                          

    B)        65

    C) 68                          

    D)        86

    Correct Answer: B

    Solution :

    Mean marks of girls Total marks of all students \[=\frac{\text{-Total marks of boys}}{\text{Total number of girls}}\] \[=\frac{1950}{30}=65\]


You need to login to perform this action.
You will be redirected in 3 sec spinner