Question 870612
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Hi
5, 10, 15, 20, 25, 30, 35, 40, 45, 50
E = mean = (1/10)(5+ 10+ 15+ 20+ 25+ 30+ 35+ 40+ 45+ 50)= 27.5
variance:
        x-27.5 (x-27.5)^2
5	-22.5	506.25
10	-17.5	306.25
15	-12.5	156.25
20	-7.5	56.25
25	-2.5	6.25
30	2.5	6.25
35	7.5	56.25
40	12.5	156.25
45	17.5	306.25
50	22.5	506.25
275	0	56.25 Variance = 506.25/9  (Using n-1)