It is (21+15)/2 = 36/2 = 18
It is: 14+15+22+21 = 72/4 => 18 which is the mean average
18/21 x 15 is 12 6/7
18
The average is 15.
It is (21+15)/2 = 36/2 = 18
It is: 14+15+22+21 = 72/4 => 18 which is the mean average
In the wild the average life span is 15 to 18 years. In captivity the average life span is about 15 to 21 years.
18/21 x 15 is 12 6/7
18
The average is 15.
19
(12+15+18)/3 = 15
15 18 21 nick joe Kevin 15 18 21 nick joe Kevin
(12+15+18)/3 = 15
15
The average is 15.