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

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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)   (Show Source): You can put this solution on YOUR website!
 
Hi
a. Range = 9-1 = 7
b. Variance = = = 8.5
c. Standard deviation =

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

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