实验标准偏差

平均值的实验标准偏差

Experimental standard deviation of the mean

重现性实验相对标准偏差分别为0.38%和2.45%。

The relative standard deviation ( coefficient of variation ) of repeated test are 0.38 % and 2.45 % .

样品未经分级，平行实验的标准偏差在10%左右。

The samples had not been fractionated , hence , the standard deviation between the parallel run was about ± 10 % .

日内精密度和日间精密度实验的相对标准偏差小于4.35%。平均回收率落在88.4-98.8%之间。

Satisfactory intra-day and inter-day precisions were achieved with RSDs less than 4.35 % , and the average recoveries obtained were in the range of 88.4-98.8 % .

在橄榄油中，精密度实验结果：标准偏差小于0.33，变异系数小于0.39%；回收率为95.10%～101.5%。

In olive oil , the results of precision : the standard deviation is less than 0.33 , the coefficient of variation is less than 0.39 % ; the results of recovery is from 95.1 % to 101.5 % .

还用Pitzer公式计算了混合溶液中KCl的平均活度系数及超额自由能，计算的活度系数与实验值之间的标准偏差为±0.006。

The mean activity coefficients of KCL and the excess Gibbs energies of the mixed salts solutions were evaluated by the Pitzer equations . The experiment values of the activity coefficients of KCL were compared with those from the Pitzer equation .

实验表明：用标准偏差与灵敏度比值的3倍较为合理。

The experiments show that three times of the ratio of standard deviation to sensitivity is reasonable .