SOLUTION: The scores of 5 students in an examination are: 6, 5, 8, 7 and 4. Find the variance.

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Question 862587: The scores of 5 students in an examination are: 6, 5, 8, 7 and 4. Find the variance.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

S	m	(x-µ)	(x-µ)^2	

4	6.00	-2.00	4.000	

5	6.00	-1.00	1.000	

6	6.00	0.00	0.000	

7	6.00	1.00	1.000	

8	6.00	2.00	4.000	

30			10.000	

			10/4 = 2.5 the variance