It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
6+8+7= 21 21/3 = 7 The average is 7.
The average is 15.
Average = 20
It is: 14+15+22+21 = 72/4 => 18 which is the mean average
Average of 21, 24, 21 and 23 = (21+24+21+23)/4 = 22.25
-4.5 is the average.
It is: (21+35)/2 = 28
It is: 21+18+15 = 54 and 54/3 = 18 which is the mean average
6+8+7= 21 21/3 = 7 The average is 7.
The average is 66.75
The average is 15.
Average = 20
19 + 24 + 20 = 63/3 = 21 The average of the three numbers is 21.
The average is 35. (21 + 35 + 49 (=105), divided by 3.)
It is: 14+15+22+21 = 72/4 => 18 which is the mean average
-21