SOLUTION: Consider the sample 2,4,7,8,9. Find the following: a. Range b. Variance s 2, using formula (2.6) c. Standard deviation, s 2

Algebra ->  Probability-and-statistics -> SOLUTION: Consider the sample 2,4,7,8,9. Find the following: a. Range b. Variance s 2, using formula (2.6) c. Standard deviation, s 2       Log On


   

Question 445417: Consider the sample 2,4,7,8,9. Find the following:
a. Range
b. Variance s 2, using formula (2.6)
c. Standard deviation, s 2
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

a.  Range = 9-1 = 7

b.  Variance = 34%2F%28n-1%29+=+34%2F4 =  = 8.5

c.  Standard deviation = sqrt%288.5%29+=+2.9155





x	m	diff	diff^2

2	6	-4	16

4	6	-2	4

7	6	1	1

8	6	2	4

9	6	3	9

30			34