| 1. | Proportion allocation in stratified random sampling
按比例分层随机抽样 |
| 2. | Empirical likelihood method under stratified random sampling using auxiliary information and the information in the strata population size
在分层抽样下有效利用辅助信息及含于层总体大小中的信息的经验似然方法 |
| 3. | The paper analyses the survey data about stratified random sample of 70 villages in shandong province by qualitatively and quantitatively
摘要20世纪90年代以来，中国农业生产结构发生了巨大的变化，但人们对农户种植结构调整的主要影响因素有显著的不同看法。 |
| 4. | The fifth part is an investigation on the present situation of english education in the kindergartens in the main urban districts in chongqing by adopting stratified random sampling
第五部分运用分层随机抽样的方法，对重庆市主城区幼儿园英语教育现状进行了调查。 |
| 5. | Method three thousand and eighty - sevedn beijing citizens from various areas were selected by using stratified random sampling and were surveyed by the questionnaires
方法采用多阶段分层随机抽样的方法，应用自行设计的调查表，调查不同地区的北京市民，共回收有效问卷3087份。 |
| 6. | This article consists of five parts , the frist two of which deal with the theoretic and partical significence of the the students of the low - income families receiving educational opportulities of colleges and universities in chongqing through discussing the background and necessity of it . the third and fourth parts are investigations on the actual situations of the students receiving educational opportulity of colleges and universities in chongqing by adopting stratified random sampling
本文共分五部分。第一、二部分从低收入家庭学生接受高等教育的背景、必要性等方面做了一般理论与实践意义的探讨；第三、四部分运用分层随机抽样的方法，对重庆市五所高校学生受教育机会的现状进行了调查。 |
| 7. | The author discussed the four steps model and provided the ameliorative method of the logit model and the solution of the fictitious public traffic routes . firstly , the author discussed the result of survey of residents trip , concluded the primary character of residents trip and put forward the method of stratified random sampling plan on that .
预测时采用了一种比较流行的“四阶段模型法” ，针对“四阶段模型法”的出行分布、交通分配子系统展开了深入的讨论，提出了针对重庆山城交通特点的“改进的logit型的随机路径选择模型”和“虚拟公交线路算法” 。 |
| 8. | From psychological activities and levels of ordinary people , we investigate psychological experts and teachers and master degree studentsetc . on what the mantel qualities of college students are . a ccording their answers and some other theories , we organize an initial questionnaire and investigate 800 college students by stratified random sampling
我们用这份54个题目的大学生心理素质量表对分层随机抽取的480名大学生进行团体测试，对回收的有效问卷进行信度和效度以及大学生心理素质情况的分析。 |
| 9. | Through questionnaire , we know the present situation of secondary school teachers ' understanding of self - regulated learning , and give our solutions on these questions . to make the investigation representative , this research adopts the way of the stratified random sample and in the three different levels of schools in the whole city - high quality , medium quality , low quality
为保证调查取样的代表性，本研究采用分层随机抽样法，即按照重点学校和非重点学校，非重点学校又分为较好的学校和较差的学校的标准，在全市中学中随机抽取300名一线教师，进行实测。 |
