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Grade-5
Mean
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Find the mean for the following set of numbers :
13, 20, 21, 27, 9
Explanation
Remember, mean is the average of all data values.
Mean = Add all the values in the set/ the total number of data values in the set.
= (9 + 27 + 20 + 13 + 21)/5
= 90/5
= 18
Therefore, the mean for the given set of numbers is 18
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