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Introduction to Statistics

If mean of an...

Question

If mean of and is 11, find the mean of first three observations.

A

5

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B

9

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C

10

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D

4

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Solution

The correct option is B
9

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If mean of x, x +2, x + 4, x + 6 and x + 8 is 11, find the mean of first three observations

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