Basic Statistics 5

1. For a certain distribution if $\sum(x-2)=18, \sum(x-24)=0, \sum(x-28)=-24$ then arithmetic mean is

2. Step deviation or coding method is used for computation of the

3. The mean of 10 numbers is 9, then the sum (total) of these numbers will be

4. Arithmetic Mean is __________ affected by extreme values

5. The variance is zero only if all observations are

6. __________ is based on all observations of data

7. If $X$ is a constant then $\sum\limits_{i=1}^2 X =$ ___________

8. The average of lower and upper class limits is called

9. The average of first $n$ natural numbers is

10. The sample mean ($\overline{X}$) is a

11. The combined arithmetic mean is calculated as

12. Arithmetic Mean is __________ affected by extreme values

13. The calculation of mean and variance is based on

14. The mean of a constant $b$ is

15. A statistics which is not measurable is called:

16. If $C= A – B$ then $\overline{C}$ is

17. The sum of values divided by their number is called

18. Arithmetic mean of two positive numbers $X$ and $Y$ is

19. Sum of deviations will be zero if it is taken from

20. Which of the following is least if $\overline{X}=14$