# Find the Mean (Arithmetic) 4 , 9 , 11 , 11 , 12 , 14 , 16 , 16 , 16 , 17 , 17 , 17 , 21 , 21 , 21 , 22 , 22

4 , 9 , 11 , 11 , 12 , 14 , 16 , 16 , 16 , 17 , 17 , 17 , 21 , 21 , 21 , 22 , 22
The mean of a set of numbers is the sum divided by the number of terms.
4+9+11+11+12+14+16+16+16+17+17+17+21+21+21+22+2217
Simplify the numerator.
13+11+11+12+14+16+16+16+17+17+17+21+21+21+22+2217
24+11+12+14+16+16+16+17+17+17+21+21+21+22+2217
35+12+14+16+16+16+17+17+17+21+21+21+22+2217
47+14+16+16+16+17+17+17+21+21+21+22+2217
61+16+16+16+17+17+17+21+21+21+22+2217
77+16+16+17+17+17+21+21+21+22+2217
93+16+17+17+17+21+21+21+22+2217
109+17+17+17+21+21+21+22+2217
126+17+17+21+21+21+22+2217
143+17+21+21+21+22+2217
160+21+21+21+22+2217
181+21+21+22+2217
202+21+22+2217
223+22+2217
245+2217
26717
26717
Divide.
15.70588235
The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.
15.7
Find the Mean (Arithmetic) 4 , 9 , 11 , 11 , 12 , 14 , 16 , 16 , 16 , 17 , 17 , 17 , 21 , 21 , 21 , 22 , 22

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