sampling survey的例句大全

The students in Northwest A F Science Technology University had accepted random sampling questionnaire survey and their recognition and consumption propensity of grape wine products were summed up as follows: ① most university students knew little about the basic knowledge of grape wine products;

以西北农林科技大学北校区大学生为调查对象，通过随机抽样问卷调查，得出大学生对葡萄酒产品认知及消费倾向如下：①大学生对葡萄酒产品基本知识了解较少；

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Study of Freight-OD Survey and Sampling Expansion Method in Large City

大城市货运调查及扩样方法研究

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Weed survey was conducted by sampling methods of inverted W-pattern to the leafy vegetable fields with different planting histories and management systems in Guangzhou region in spring.

于春季利用倒置“W”取样法对广州地区不同种植年限及管理措施的叶菜田进行杂草群落调查。

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finally, the sampling techniques and data analysis methods are used in xining city resident trip survey practice, achieves good results.

最后将本文的抽样技术和数据分析方法应用于西宁市居民出行调查的具体实践中，取得了良好的效果。

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Methods Using the total dietary study method, the analytical samples were obtained in different areas by food consumption survey, food aggregation, food sampling and preparation.

方法采用总膳食研究方法，通过膳食调查、统计不同地区人群各种食物的消费量、按照所得的食物消费量数据烹调加工并混合成可食的各种食物类别。

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the third stage is to conduct the survey by on-the-spot questionnaire survey to 668 professionals in 29 cdcs at three different levels: provincial, municipal and county levels using a random sampling method.

第三阶段运用随机分层抽样方法，对29个包括省、市、县三级CDC的668名工作人员进行了现场问卷调查。

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methods: a large-scale survey was conducted at 250 medical health units baaed on stratified sampling.

方法使用分层抽样的方法在全国范围内抽取250家医疗机构开展大规模调查。

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the field survey is mainly used to gain the data on plan design and adjustment, and according to the principle of typical sampling, we choose zhangqiu and pingyin county as the samples, where we altogether extract 2160 families of countryside residents, and 7607 persons.

现场调查法主要用来获取具体方案设计和调整的相关数据，按照典型抽样的原则，选择章丘市和平阴县作为调查样本，两县（市）共抽取2160户农村居民，实际调查7607人。

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methods: the method of random sampling was conducted to carry on questionnaire survey to 270 rural residents in hubei province.

方法：采用随机抽样的方法对湖北省270名农村居民进行问卷调查。

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The research adopted the cluster stratification sampling and used household survey among 4 980 adolescents aged from 10 to 24 in these four cities.

采用整群分层抽样和入户调查方法，对4市4980名10～24岁青少年进行研究。

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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。

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Methods The multi-stage sampling method, i.e. cluster and stratification sampling combined with systematic sampling, was applied to conduct a household survey of residents in communities. The data of survey were recorded with database of Epi data, and analyzed statistically with analysis software of SAS.

方法采取多阶段抽样方法，即整群分层抽样和机械抽样相结合的方法对社区居民进行入户调查，调查数据采用EPI DATA数据库录入，SAS分析软件进行统计分析。

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The households with water storage in 5 townships selected by simple random sampling in each county have been visited for household survey. 2.

在选择的调查县中，采用单纯随机法抽取5个乡镇中具有家庭储水的农户进行入户调查。

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gallup was an american statistician who invented the gallup poll, a successful statistical method of survey sampling for measuring public opinion.

这位美国的统计学家是盖洛普民意测验的首创者。盖洛普民意测验是为了测量民意对其调查样本进行统计的科学方法。

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