方法采用分层随机抽样方法。
方法监测点的选择采用单纯随机抽样方法。
Methods Simple random sampling was used to choose surveillance counties.
本文阐明了带有不同倾向性的随机抽样方法。
This article shows us the method of random sampling with varies tendency.
方法采取分层整群随机抽样方法进行问卷调查。
Methods Stratified cluster random sampling was carried out in prevalence survey and questionnaires was applied.
具体说明方法的数学概率模型及随机抽样方法。
A mathematical probable model and random sampling method are illustrated, too.
研究方法本研究采用分层整群随机抽样方法进行抽样。
RESEARCH METHODThe stratified multi-stage cluster random sampling method was used in the survey.
方法：本研究采用分层随机抽样方法和整群随机抽样方法。
Methods: The stratified sampling and cluster random sampling methods are used in this survey.
同已有的最好的方法比较这些随机抽样方法的效率均有提高。
The efficiency of these new random sampling methods is high in comparison with the best of the existing methods.
在简单随机抽样方法的基础上提出了分层抽样的模糊综合评价模型。
A layered sampling model for fuzzy comprehensive evaluation was developed based on simple random sampling methods.
方法：采用单纯随机抽样方法，对500名农民进行入户问卷调查。
Methods: Using the pure random sampling method, carries on the residence questionnaire survey to 500 farmers.
方法采取随机抽样方法，对不同层次目标人群进行问卷调查并统计分析。
Methods Different target population were chosen at random and investigated with questionnaire.
方法采取随机抽样方法，对161名社区卫生服务从业人员进行问卷调查。
Methods Random sampling was carried out in a survey for 161 community health service manpower by questionnaire.
方法采用整群随机抽样方法，抽取荣成市沿海地区8757名渔民为调查对象。
Methods The grouped random sampling rule survey was carried out in a sample population of 8757 who lived in seaside district of Rongcheng city.
有序抽样是一种新的抽样方法，与简单随机抽样方法相比它具有很多很好的性质。
Ranked set sampling (RSS) is a new sampling method. Compared to simple random sampling method (SRS), RSS sample has many good properties.
本研究采用分层整群随机抽样方法，共调查农村6229户家庭，15667人。
A household survey was conducted over 6229 rural households in which there were 15667 persons through stratified and cluster sampling.
方法在重点地区采取随机抽样方法选择调查点进行饮水砷测定及地方性砷中毒调查。
Methods The investigated sites were randomly sampled in possible regions where determination of arsenic content in drinking water and survey on endemic arsenic poisoning was carried out.
方法：采取单纯随机抽样方法对杭州某县乡镇干部、卫生院职工及患者进行问卷调查。
Methods Questionnaire survey township leading cadres, township hospital employees and patients with simple random sampling.
大规模现场调查，由于情况复杂、影响因素多，往往采用多阶段混合型随机抽样方法。
In large scale field surveys, multistage sampling is applied because the situations are complex and there are many influencing factors.
方法采用整群随机抽样方法，对福州、三明市城区19岁以上居民进行横断面的调查。
Methods Questionnairy survey, physical examination, and laboratory testing were conducted urban inhabitants aged above 19 years in Fuzhou and Sanming selected by cluster random sampling.
方法：采取整群随机抽样方法，对本市农村地区老年人群进行结核病流行病学抽样调查。
Methods: Epidemiological survey of tuberculosis was conducted by cluster random sampling in the elderly in rural area.
在本文中，设法避开计算三角函数和任何其他复杂函数的一些新的随机抽样方法被提出来了。
In this paper, several new random sampling methods that avoid the calculation of trigonometric and all other complicated functions are developed.
方法采用非概率随机抽样方法，选取283户家庭进行调查，并对调查结果进行统计、分析。
METHODS: a total of 283 families were investigated by random sampling, and the results of investigation were analyzed statistically.
方法采用单纯随机抽样方法，对无锡市1010名流动人口和240名当地人群进行问卷调查。
Methods With simple random sampling, 1010 floating population and 240 local people in Wuxi were interviewed by questionnaire.
方法对社区人群采用多阶段分层整群随机抽样方法抽取研究对象，进行个案调查和血清学检测。
Methods Subjects were collected from community population by stratified multi-stage cluster sampling method. The data gathered from case investigation and serological detection.
方法采用整群随机抽样方法，抽取337例0～18个月婴幼儿的母亲，对其进行问卷调查。
Methods In a method of randomly chester sampling, we drew 337 mothers whose infant age varying in month from 0 to 18 and conducted a questionnaire investigation.
方法采用多阶段分层随机抽样方法，选取了400例正常儿童和25例孤独症儿童为研究对象。
Methods: With the multistage stratified sampling, we randomly selected 400 normal children and 25 autism children as study samples.
方法采用分层整群随机抽样方法，询问调查抽中的广州市1级、2级和3级医院的一线临床医生。
Methods a questionnaire survey was conducted among the clinical doctors selected by stratified cluster random sampling from grade 1, 2 and 3 hospitals in Guangzhou.
方法采用多层随机抽样方法，抽取深圳市7个区7家企业1356名员工进行健康素养现状调查。
Methods 1356 employees of 7 enterprises from 7 districts of Shenzhen City were selected by multi-stage random sampling and investigated by questionnaires.
本研究采用中心产区典型群随机抽样方法，对海子水牛、山区水牛进行体型外貌评定以及屠宰测定；
Using the method of"random sampling in typical colonies of the central area of the habitat", we assessed physiognomy bodily form and slaughter determination in Haizi and Mountainous buffalo.
本研究采用中心产区典型群随机抽样方法，对海子水牛、山区水牛进行体型外貌评定以及屠宰测定；
Using the method of"random sampling in typical colonies of the central area of the habitat", we assessed physiognomy bodily form and slaughter determination in Haizi and Mountainous buffalo.
应用推荐