Terms for subject Mathematics containing deviations from

English	Russian
deviation from equilibrium	отклонение от равновесия
deviation from mean	отклонение от среднего (значения)
deviation from quadratic	отклонение от квадратичности
deviation from the rated value	отклонение от нормы
root mean square average is by definition the root of the average of the squares of the deviations from the average	среднее квадратичное
the deviation of ... from the theory	отклонение от теории