2. Questions Bank
  3. 7th Class
  4. Mental Ability
  5. Data Handling

7th Class Mental Ability Data Handling Question Bank Data Handling

  • question_answer
    David throws a die 10 times and the following are outcomes. 2, 5, 6, 6, 1, 5, 4, 1, 4, 6, 5 The mean of the above observations is:

    A) 3      

    B)                           4.5         

    C) 5             

    D)               45

    E) None of these

    Correct Answer: B

    Solution :

    Explanation \[=\,\,Mean\,\,=\,\,\frac{Sum\,\,of\,\,observations}{Tota\operatorname{l}\,\,number\,\,of\,\,observations}\] \[=\,\,\,\frac{2+5+6+6+1+5+4+1+4+6+5}{10}\,\,=\,\,45\]


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