E(X) = 1*0.15 + 2*0.22 + 3*0.14 + 4*0.08 + 5*0.32 + 6*0.09 = 3.45. D(X) = E(X^2) - (E(X))^2. E(X^2) = 1^2*0.15 + 2^2*0.22 + 3^2*0.14 + 4^2*0.08 + 5^2*0.32 + 6^2*0.09 = 13.55. D(X) = 13.55 - 3.45^2 = 1.6675. Стандартное отклонение = sqrt(1.6675) = 1.29