The standard deviation from the mean is the preferred quantity . 用平均值得出標準偏差是優(yōu)先采用衡量的單位。
The assessment of repeatability of measurements was done by calculating the characteristic percentage standard deviation from the mean for repeated measurements across the patient population 通過重復檢測得到多個檢測值,求出均值和標準差,以衡量檢測的重復性。