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The mean of 100 items was found to be...

The mean of 100 items was found to be 30. If at the time of calculation two items were wrongly taken as 32 and 12 instead of 23 and 11, find the correct mean.

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The correct Answer is:
29.9
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  10. The mean of 10 number is 20. If 5 is subtracted from every numbe...

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  11. The mean of 16 numbers is 8. If 2 is added to every number, what will ...

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  12. Find the mean of the following distribution.

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  13. Find the mean of the following distribution

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