Find the Mean (Arithmetic) 15 , 27 , 25 , 28 , 30 , 3122 , 25 , 27 , 29

15 , 27 , 25 , 28 , 30 , 3122 , 25 , 27 , 29
The mean of a set of numbers is the sum divided by the number of terms.
15+27+25+28+30+3122+25+27+299
Simplify the numerator.
42+25+28+30+3122+25+27+299
67+28+30+3122+25+27+299
95+30+3122+25+27+299
125+3122+25+27+299
3247+25+27+299
3272+27+299
3299+299