Question 445417
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Hi
a.  Range = 9-1 = 7
b.  Variance = {{{34/(n-1) = 34/4}}} =  = 8.5
c.  Standard deviation = {{{sqrt(8.5) = 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