课外活动反映了皮尤研究中心育儿方式的差异，这是从对全国1807名家长的代表性抽样调查的结果。
Extracurricular activities reflect the differences in child-rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.
抽样问题：有关源和代表性样品的证据，你的听众和您使用的是形成清晰的推论并得出结论。
Sampling issues: clarity about the source and representativeness of samples of evidence that your audience and you are using to form inferences and draw conclusions.
ADC的前提是根据抽样的一小部分表数据自动创建一个代表性的压缩字典。
The premise behind ADC is to automatically create a representative compression dictionary based on sampling a small subset of table data.
在巴西这样一个国土辽阔，差异巨大而又不公平的国家进行具有代表性的抽样民意调查可谓艰难。
It is hard to construct a representative sample in a country as large, diverse and unequal as Brazil.
如果想通过电话调查提供有效、可靠和有代表性的数据，现在有必要开展移动电话抽样和采访工作。
Sampling and interviewing respondents by cell phone is now a necessity if telephone surveys are to provide valid, reliable and representative data.
如果您是为整个公司设计架构的话确保您所运用的抽样都是公司富有代表性的。
If you create a framework for the entire organization, make sure you use a sample of roles from across the company.
研究小组采取面对面访谈的方式，对全国1万余名年龄在13至18岁之间（平均年龄15岁）有代表性的青少年进行了抽样调查。
The design consisted of face-to-face interviews of a nationally representative sample of more than 10,000 adolescents aged 13 to 18, with an average age of 15.
为使监测点具有良好的代表性，必须遵循随机抽样的原则。
If the monitoring station has good representative, it will hare to follow the principle of the random sampling.
本文主要采用典型抽样法，选取南宁市14座具有代表性的城市立交桥作为重点研究对象。
This paper USES the typical sampling method, selection of Nanning city block 14 has the representative city overpass bridge as the research object.
方法采用多阶段随机抽样的方法，在浙江省有代表性的30个县区，对7482名年龄在15～69岁的居民进行面对面问卷调查。
Methods A total of 7482 residents aged 15-69 selected in representative 30 counties through multi-stage random sampling from Zhejiang Province were surveyed by using questionnaire.
目的解决居民健康调查中入户后的抽样问题，产生代表性较好的研究样本。
Purpose To solve the problem of sampling within household in resident health survey and generate a representative sample.
目的解决居民健康调查中入户后的抽样问题，产生代表性较好的研究样本。
Purpose To solve the problem of sampling within household in resident health survey and generate a representative sample.
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