15 , 15 , 15 , 10
The mean of a set of numbers is the sum divided by the number of terms.
15+15+15+104
Add 15 and 15.
30+15+104
Add 30 and 15.
45+104
Add 45 and 10.
554
554
Divide.
13.75
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.
13.8
Find the Mean (Arithmetic) 15 , 15 , 15 , 10