Statistics Part 1

Section: Mathematics

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Question : 77 of 100

Marks: +1, -0

If

9

∑

i=1

(xi−5)=9 and

9

∑

i=1

(xi−5)2=45,then the standard deviation of the 9 items x1,x2....x9 is:

[Main 8 April 2018]

9
4
2
3

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