The standard deviation from the mean is the preferred quantity . 用平均值得出标准偏差是优先采用衡量的单位。
2.
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 通过重复检测得到多个检测值，求出均值和标准差，以衡量检测的重复性。
