Hi, All, For my project, we have to review clients' working records manually. Usually, there are over 30,000 records. So we use the simple random sample to review over 300 records. The sample size was calculated by an online sample size calculator.  We extrapolated the over cost of all records from the review results of the sample. We have compared the random sample extrapolation and the censorship results for one case, the difference was really small. My problem is some of my clients do not trust random sample results. They only want censorship. but the censorship may take years.  I tried to give them random sample rational and examples to explain, but they were still not buying it. One of my clients said, " I don't believe statistics." Do you have any suggestion to make people believe the random sample, especially, when they don't believe statistics? Thank you. ... View more