4 5 8 65 89 76 56 22
Mittelwert
x = (4 + 5 + 8 + 65 + 89 + 76 + 56 + 22) / 8 = 40.625
Varianz
V = ((4 - 40.625)^2 + (5 - 40.625)^2 + (8 - 40.625)^2 + (65 - 40.625)^2 + (89 - 40.625)^2 + (76 - 40.625)^2 + (56 - 40.625)^2 + (22 - 40.625)^2) / 8 = 1055.484375
Standardabweichung
σ = √1055 = 32.49