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average 1,2,3,4,5,6
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Solution
3.5
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Arithmetic Mean
The arithemtic mean (average) is the sum of the values in the set divided by the number of elements in that set. If our data set contains the values a1,…,an (n elements) then the average=1n∑i=1nai
Compute the sum of the data set:∑i=1nai=21
Compute the number of terms in the data set:n=6
Divide the sum by the number of terms and simplify:3.5