Question

if the mean of 17 observations is 2.3 then what will be the sum of all observations.
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Answer 1

Step-by-step explanation:

Mean of 20 observations = 15

∴ Sum of 20 observations = 15×20=300

Replacing 3 and 14 by 8 and

9 will mean that 3 + 14= 17 is replaced by 8 + 9 = 17.

Hence there will be no effect on the sum. It will still remain 300, so the mean will not change and will remain 15.

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Answer 2

Answer:

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