在简单随机抽样方法的基础上提出了分层抽样的模糊综合评价模型。
A layered sampling model for fuzzy comprehensive evaluation was developed based on simple random sampling methods.
具体介绍了砼强度检测抽样的几种方法：现行规程抽样法；简单随机抽样法；分层抽样法。
This paper introduced several methods about the concrete strength inspection: the sampling method given by the present specification; simple random sampling without replacement; stratified sampling.
分层抽样可以减少由简单随机抽样造成的抽样误差。
Stratified sampling can reduce the sampling error associated with simple random samples.
应用推荐