论文投稿，每个处理的实验结果用了means±SD表示，编辑提出了如下修改意见，希望用pooled standard deviation，论文中我的数据是一共11组处理，每组处理有两个条件，即条件1和条件2分别计算means±SD（n=3~6），处理1~11进行显著性分析。现在按编辑意思不应该用SD，而用pooled SD，不是很理解编辑的意图，不知道该如何修改和回复，寻求大神帮助。

编辑意见：In Tables indicate number of replicates and give a pooled estimator for the precision of the measurements (pooled standard deviation, confidence interval or least significant difference). Any of the last three are preferred for measurements which are within the same order of magnitude. Such pooled estimators are much more robust than SDs calculated on only part of the data. They add one line/column to the Tables but eliminate all individual SDs Pooled variance is a method for estimating variance given several different samples taken in different circumstances where the mean may vary between samples but the true variance (equivalently, precision) is assumed to remain the same. Pooled variance is calculated for a series of replicated measurements as the sum of individual variances pondered by degrees of freedom (sum of VarixDFi / sumDF). The square-root of a pooled variance estimator is known as a pooled standard deviation