样本量是指调查抽取的样本单元的数量，是保证达到调查结果预期精确度所必须抽取的最小样本单元数。确定样本量是调查设计中一个重要的基本问题。 一、样本量的确定 一个适宜的样本量是综合考虑调查估计值的精度要求和对调查实施的各种制约因素权衡轻重确定的。 1. 调 The sample size refers to the number of sample units drawn from the survey and is the minimum number of sample units that must be extracted to ensure the expected accuracy of the survey results. Determining sample size is an important fundamental issue in survey design. First, the sample size to determine an appropriate sample size is to consider the accuracy of the survey estimates the accuracy of the investigation and implementation of a variety of constraints determined by the trade-offs. Tune