It is: (11+15)/2 = 13
(11 + 16 + 15) ÷ 3 = 14 is the average
15
Average = 12
the average is 16 11+16+15+22=64 64/4=16
15.
The average of 9, 15, 11, and 13 is 12. It is calculated by adding all the numbers together (9+15+11+13 = 48) and then dividing by the total number of values (4).
12
13
12 + 23 + 14 + 11 = 60/4 = 15 The average is therefore 15.
The average mean is: (11+12+13+14+15)/5 = 13
13.2 is the average.
IQ is based on an average of 100 and a standard deviation of 15 for any group