21 is the average of 13,16 & 34 because if you add them altogether you get 63 and you divide it by 3 because there is three numbers, you get your average.
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The median is 13.
The average is 15.
The average is 14.
Well 16, in its simplest form is 16, and 34 is 34.
Average is a casual word . You need to know the MEAN Mean = {10+12+14+16)/4 mean = 52/4 mean = 13 The answer!!!!