Q.

If the observations 2,4,8 and 16 occur 8, 6,4 and 2 times respectively, then the geometric mean of the observations is

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a

8

b

42

c

4

d

None of these

answer is C.

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Detailed Solution

∵ we knowGeometric mean =x1×x2×…×xnn=28×46×84×16220=28×212×212×2820=24020=24020=22=4
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If the observations 2,4,8 and 16 occur 8, 6,4 and 2 times respectively, then the geometric mean of the observations is