Class mark is the middle value of a class?

1. No

2. None of the above

3. Yes

4. sometimes
   

   If in calculation no. of classes comes out to be equal to6.01, then correct no. of classes should be atleast?

5. 5

6. 7

7. 6

8. 7.1
   

   what is the sign of standard deviation when written with mean tofind predicted outcome?

9. negative

10. positive

11. None of the above

12. both negative and positive
    

    Same data can be analyzed as ungrouped or grouped dataanalysis

13. Yes

14. No