sampling survey是什么意思
抽样调查
1. 抽样调查： 2.抽样调查(sampling survey):是医学研究中最常用的方法,是通过随机抽样(random sampling)方法 从总体中随机抽取一定数量具代表性的观察单位组成的样本进行调查,然后根据样本信息来推断总体特征.常 用的抽样方法见第三节.
2. 样本甸：sampling ratio 抽样比 | sampling survey 样本甸 | sampling unit 抽样单位
3. 抽样检查：相联系数 : Correlation coefficient | 抽样检查 : Sampling survey | 普查 : Census
1. The company Survey Sampling International's Beijing office was in charge of the online survey, said Ke.
2. Hu also said that every evaluation in the online survey requires a report including useful data about sampling.
3. The employment rate of those trained by general vocational education reached 94 percent in 2004, according to a sampling survey conducted by relevant departments.
4. The AP's survey was not a comprehensive compilation of the nationwide death toll, but was a sampling intended to assess the levels of violence.
5. The survey had a margin of sampling error of plus or minus 3 percentage points.
6. Over 70 percent of Beijing's urban families own their homes, according to a sampling survey cited in the Beijing News Wednesday.