Respuesta :
Add every number up.
21 + 23 +25 + 25 + 26 + 28 +28 + 28 + 31 + 33 = 268.
Then divide by the amount of numbers we have which is 10.
268/10 = 26.8
The mean is 26.8
21 + 23 +25 + 25 + 26 + 28 +28 + 28 + 31 + 33 = 268.
Then divide by the amount of numbers we have which is 10.
268/10 = 26.8
The mean is 26.8