If each value of the data is increased by 5, their mean:

will become 5 times its original mean.

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will be decreased by 5

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will be increased by 5

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remains the same

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Solution

The correct option is C will be increased by 5
Let there be n terms in the dat set.
Increasing every term by 5 will increase their sum by 5n
So, Increase in mean = $\frac{5 n}{n} = 5$

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