The mean of 3, 7, 8, 21, 11 is 10.
What is Mean ?
The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.
Given that: 3, 7, 8, 21, 11
Mean= [tex]\frac{Sum\; of\; observation}{Total\; number\; of\; observation}[/tex]
= 3+7+8+21+11 /5
=50/5
= 10
Hence , the mean of data is 10
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