May trust the degree is refers to the sample nature to be able to represent the overall nature the reliable degree, namely audit conclusion correct possibility, or reasonable guarantee degree.May trust the degree and the sampling risk is supplementary.May trust the degree to be higher, the sampling risk is lower, the request audit conclusion is more correct or the guarantee degree is higher, then needs the sample size are more. May tolerate the error is the audit object overall biggest error which chartered accountant is willing to accept, namely important level.May tolerate the error to be bigger, the important level is higher, the sample size which needs are less. The anticipated overall error is chartered accountant acts according to the experience and in the analysis estimate overall the mistake degree.Estimated in the overall exists the mistake are more, the sample size which needs are more.可以下金山快译翻一下~