Respuesta :
The mean of this dataset is calculated by summing all of the numbers you have and through diving them with the amount of numbers you have - so
18 + 15 + 22 + 18 + 25+ 19 + 23 = 140
140 / 7 = 20
Mean = 20
18 + 15 + 22 + 18 + 25+ 19 + 23 = 140
140 / 7 = 20
Mean = 20