aPopulation in this research consisted of all USA firms during period of 1971 to 2003 in which following previous studies, financing and welfare firms were excluded from the sample. 跟随的早先研究、财务和福利救济企业从样品被排除的人口在这研究包括了所有美国企业在1971年的期间到2003年。[translate]...
aPopulation in this research consisted of all firms that had been listed in Tehran Exchange Stock and been active during period of 2006 to 2011. Screening method (elimination method) had been used in order to select a sample which would act as a proper representative of the population. For ...
In market research, a sample that represents the entire population is called a ___. A. random sample B. representative sample C. convenience sample D. stratified sample 相关知识点: 试题来源: 解析 B。本题考查市场调研中的样本类型。选项 A“random sample”是随机样本;选项 B“representative sample...
A. the entire population B. a part of the population selected for study C. the data collected D. the method of data collection 相关知识点: 试题来源: 解析 B。本题考查“sample”在市场调研中的含义。选项 A 指的是全体人口,不符合“sample”的定义;选项 B 是从总体中选取的一部分用于研究,这正...
Rural migrants' participation in old-age insurance: a case study of the inter-provincial migrant workers from Sichuan, China C Yong,T Yan,Z Qin-《Chinese Journal of Population,Resources and Environment》 被引量:3发表:2017 Research on the effects of command-and-control and market-oriented policy...
It is well known in the evidence-based medicine practice that framing the research question is the most important and crucial part of the research integrity. Population, Intervention, Comparison, and Outcome (PICO) is a specialized framework used by most researchers to formulate a research question...
XMAP can identify multiple causal signals with a linear computational cost, while many existing fine-mapping methods are too time-consuming to identify multiple causal signals. Third, XMAP can correct the confounding bias in GWAS summary data to avoid false positive findings and improve reproducibility...
A five-year project, building on an ongoing epidemiological study of menopause in 2500 women, will examine the aging process in middle-aged and older men, women, and couples in Massachusetts. While past research on aging has usually focused on disease and has drawn on a self-selecting, usuall...
The status quo is a preoccupation with understanding hearing through knowledge of the peripheral hearing system, no answers for those with a "normal ... D Hewitt - 《F1000research》 被引量: 0发表: 2018年 The Role of Powered Surgical Instruments in Ear Surgery: An Acoustical Blessing or a Cu...
microbiota. In particular, the most numerically abundant component of the human microbiota, the gut microbiome7, has the potential to be an important reservoir of AMR8. There is now a significant body of research focussed on the transient impact of antibiotics on individual human gut microbiomes....