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如何衡量调查收集资料的可信度，计算抽样调查的误差及其精度，是一个值得研究的问题。本文就水利抽样调查误差计算和精度要求，确定调查容量问题进行了探讨，并给出了相应的计算公式。
How to measure the credibility of the survey data collected and calculate the error and accuracy of the sample survey is a question worthy of study. In this paper, the water sampling survey error and accuracy requirements to determine the survey capacity were discussed, and the corresponding formula is given.