分层抽样
- 与 分层抽样 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Especially, the combined ratio estimator of domain total is investigated under stratified complemental sampling when auxiliary information can be used.
及该方案在分层抽样下的推广,在有辅助信息可用时构造域总量的分层联合比估计,并给出其方差和方差估计公式,同时我们给出了模拟结果,从模拟结果可以看出,给出的方差估计是估计量方差的近似无偏估计。
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By using stratified sampling method, a retrospective analysis was performed according to 1 146 cases.
采用分层抽样的方法,回顾性地分析1 146例患儿首选及联合使用抗生素情况。
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Methods: Stratified sampling survey among the youth in government organizations.
研究方法:采用分层抽样方法对机关青年的工作满意度和价值观进行问卷调查。
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Methods:Stratified multiple phases sample method was adopted, 240 female doctors were assessed.
采用多阶段分层抽样方法对240名三级甲等综合医院的女性医生进行调查。
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In this study, stratified sampling is used to select samples in Gansu Province.
本研究采用分层抽样的方法,在甘肃省四个县进行调查和分析。
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Finally to Stratified Sampling improvement of technology put forward some views.
最后对分层抽样技术的改进提出了一些看法。
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Methods Based on stratified sampling, 363 medical facilities were selected to conduct the survey.
采取分层抽样方法在全国范围内抽取363家医疗机构开展调查。
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Methods A self-developed questionnaire was used to investigate 2600 old persons selected in 26 provinces by stratified sampling.
方法在26省按照城乡和男女分层抽样,对2600名老年人进行问卷调查,并对有效的2414份问卷进行数据统计学处理。
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In this paper, 236 SMEs of different types of ownership and from different industries are investigated using a stratified sampling method.
本文采用分层抽样方法,对236家不同所有制、具有行业代表性的中小企业展开了问卷调查。
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Stratified sampling design is applied in obtaining an accurate representation of the population by grouping the data into nonoverlapping groups, for example gender or income level, then selecting a simple random sample within each group.
分层抽样是将总体分成若干个组分,在每个组分中进行简单随机抽样,其原则在于将类似的样本归在一个组里面。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。