statistical sampling methods造句

例句与造句

1. 4 . during the investigation of distinction in mathematical cognitive structure , the author uses statistical sampling method . by test - analysis , observation , conversation and exchanging with teachers , the qualitative and quantitative analysis is made
   在对高中生数学认知结构个体差异的调查研究中，笔者首先采用整群+分层抽样的统计方法选取了样本，然后通过问卷测试?分析法、观察法、谈话法以及与数学教师的交流对调查结果做出了定量和定性的分析。
2. It's difficult to find statistical sampling methods in a sentence. 用statistical sampling methods造句挺难的