stratified sampling的例句大全

Methods A total of 198 nurses using stratified random sampling in proportion to the ratio of different levels of the nurses. A questionnaire with approved validity was used in the survey, and the results were statistically analyzed.

方法参考TQC的相关知识，自行设计问卷，采用按护士层次比例分层随机抽样的方法抽取198位护士，采用统一发放、集中收回的调查方式。

Methods Stratified chester random sampling.

方法采用分层整群随机抽样的调查方法.

Methods By stratified cluster sampling, 6280 undergraduates and graduates in three key universities in Beijing were selected to fill out three self report questionnaires, Zung's Self-Rating Anxiety Scale, Zung's Self-Rating Depression Scale, and General Information Questionnaire.

方法采用ZUNG氏焦虑自评量表、ZUNG氏抑郁自评量表和一般状况调查表，以分层整群抽样的方法，对北京三所全国重点高校的6280名在校本科大学生和研究生进行问卷调查。

Cluster of Equal Size Sampling Supplemented by Stratified Sample

辅以分层抽样样本的等容量整群抽样方法

Methods: The self-designed questionnaires were used to anonymously investigate on179 students in19 academies of the university who were selected by stratified random sampling.

方法：运用笔者自行编制的问卷，采取分层随机抽样的方法对山西师范大学19个专业的179名大学生进行匿名调查。

Methods A stratified cluster sampling method was used to survey the health status in 2161 samples from 540 families in 3 Bama Counties of China, and of the 746 participants had been surveyed for the diet nutrition.

方法运用分层整群抽样方法，抽取3个乡镇、6个村、540户共2161例进行健康调查，其中180户746例进行膳食调查。

Methods Grade one students in junior middle schools were selected, a two-stage, stratified cluster sampling method was applied to collect traditional teaching group ( 124), in-class peer group ( 145) and high-grade peer group ( 133).

方法以初一学生为教育对象，采用二阶段分层整群抽样方法，确定传统教学组、本班同伴组和学长同伴组，各组学生人数分别为124145和133人。

Estimation of the Geometric Mean in Stratified Random Sampling

分层抽样中几何平均数的估计

According to the social economy and geography of these regions, Stratified random sampling was adopted and the surveyors are 2540 people.

根据各地区的社会经济发展水平和地理分布，采用分层随机抽样的方法，共调查了2540人。

Methods An equal-sized stratified multi-stage randomly sampling design was applied to obtain three provincially representative sample groups consisted of 720 Guangdong residents each, aged at 12,35-44 and 65-74 years old respectively, with a gender ratio of half to half.

方法采用多阶段分层等容量随机抽样的方法，抽取广东省12岁、35~44岁、65~74岁城乡常住人口各720人，男女各半。

The Stratified Random Sampling Method and Small Sample Testing

分层随机抽样方法与小子样检验

DESIGN: Cluster sampling and stratified analysis.

设计：整群抽样，分层分析。

Methods 1589 third grade pupils sampled from 10 provinces and cities by stratified cluster sampling.

方法分层随机整群抽样,从10个省市中随机抽取小学三年级学生共1589人,填写结构式调查问卷.

Methods 2 266 peasants were investigated with stratified cluster sampling.

方法采取分层整群抽样的方法，调查安庆市郊区农民2266人。

Stratified random sampling of forest survey

森林分层随机抽样调查

Methods Households were stratified by the number of adults in the household and Kish Grid sampling method was used to perform equal probability sampling within each stratum.

方法采用Kish Grid抽样方法，将抽样家庭按家庭成人数进行分层，在层内进行等概率抽样。

this study investigated foreign language reading anxiety and its relationships to cet4 and gender. based on stratified random sampling, 211 subjects were selected.

利用外语阅读焦虑和外语课堂焦虑量表，对通过分层随机抽样得到的211名非英语专业二年级大学生进行了测试，并就阅读焦虑与英语四级统考成绩及性别的关系进行了研究。

In quantitative research, to obtain the survey respondents through stratified cluster random sampling.

定量研究中，通过分层整群随机抽样获取调查对象，采用入户调查方式通过面对面询问调查；定性研究中，采用文献综述方法获得研究资料。

Stratified random sampling technique Nanjing 450 college students were tested.

采用分层随机抽样的方法抽取450名南京在校大学生被试。

At the same time it was analyzed how to stratify the stratums and define the optimal samples by the stratified random sampling in the study of street tree populations, and some formulas were introduced for calculating the parameters of the urban street tree populations.

其中着重分析了在城市街道绿化树种结构研究中运用分层随机抽样调查法应如何进行分层与如何确定合适的样本量；