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If the observation 1, 2, 3, ……….., n occ...

If the observation 1, 2, 3, ……….., n occur with frequency, `n,(n-1), (n-2),…..,1` respectively such that the mean of observations is `(13)/(3)`, then n is equal to

A

10

B

11

C

12

D

13

Text Solution

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The correct Answer is:
B
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