9th Class Mathematics Statistics Question Bank Statistics

  • question_answer
    DIRECTIONS: Passage ? 2 Read the passages given below and answer the questions that follow. If a set of data contains a few ''very high scores" or "very few scores", the mean does not satisfactorily represent the data. In such situations it is often more desirable to use the middle score, called the median, as the representative score. The median of a set of numbers is the middle number when all the numbers are arranged in order of size, i.e., in descending or ascending order. The marks scored by 6 students are 5, 9, 8, 7, 2, 3. The median marks are

    A)  6                    

    B)  7

    C)  6.5                             

    D)  5

    Correct Answer: A

    Solution :

         Number of observations = even Arrange data in ascending order: 2, 3, 5, 7, 8, 9. Median\[=\frac{(\text{3rd}+\text{4th})}{2}\text{obs}=\frac{5+7}{2}=6.\]        


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