Question

9. Find each of the following values for the sample in the following frequency distribution table.

x= 5 4 3 2 1

f= 1 2 4 2 1

9.1 n=

9.2 ∑x2=

9.3 ∑(x+1) =

9.4 ∑(x-3)2=

Answer 1

Solution:

x	f		x+1	(X -3)
5	1	25	6	2	4
4	2	16	5	1	1
3	4	9	4	0	0
2	2	4	3	- 1	1
1	1	1	2	-2	4
Total

1) n = 10

2)

3)

4)