MHT CET 2021 Math Solved Paper

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Question : 60 of 100

Marks: +1, -0

If x1,x2,...,x18 are observations such that

18

∑

j=1

(xj−8)=9 and

18

∑

j=1

(xj−8)2=45, then standard deviation of these observations is

√‌
81
34
5
√5
‌
3
2

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