ARIES: A Visual Path in the Investigation of Statistical Data

Abstract

The massive flood of numbers in ongoing large-scale periodic economic and social surveys commonly leaves little time for anything but a cursory examination of the quality of the data, and few techniques exist for giving an overview of data activity. At the U.S. Bureau of Labor Statistics, a graphical and query-based solution to these problems has recently been adopted for data review in the Current Employment Statistics survey. Chief among the motivations for creating the new system were: (1) Reduce or eliminate the arduous paper review of thousands of sample reports by review analysts; (2) allow the review analysts a more global view of sample activity and at the same time make outlier detection less of a strain; and (3) present global views of estimates over time and among groups of subestimates. The specific graphics approaches used in the new system were designed to quickly portray both time series and cross-sectional aspects of the data, as these are both critical elements in the review process. The described system allows the data analysts to track down suspicious sample members by first graphically pinpointing questionable estimates, and then pinpointing questionable sample data used to produce those estimates. Query methods are used for cross-checking relationships among different sample data elements. Although designed for outlier detection and estimation, the data-representation methods employed in the system have opened up new possibilities for further statistical and economic uses of the data. The authors were torn between the desire for a completely automatic system of data review and the practical demands of an actual survey operating under imperfect conditions, and thus viewed the new system as an evolutionary advance, not as an ideal final solution. Possibilities opened up by the new system prompted some further thinking on finding an ideal state.     

吸烟者调查抽样设计案例研究

本文通过对南宁市烟草公司拟进行的吸烟者调查抽样设计案例的研究,讨论了有限总体概率抽样原理和技术方面某些问题的具体应用。其中包括:抽样单位的选择;总体总值的单位均值估计量和比估计量;总体比率的比估计量;直接写出比估计量方差的法则,等等。在此基础上,进行了案例实证分析。     

机构调研行为的示范效应研究——基于深证“互动易”平台的实验证据

基于深交所“互动易”平台的机构调研信息和投资者问答数据,以投资者关注为聚焦点,通过剖析机构调研行为-投资者关注-股票流动性的传导路径,检验中国股票市场机构调研行为的示范效应。结论表明,机构调研行为具有强烈的示范效应,能够通过引起其他投资者的关注,促进中短期股票流动性的提高,且机构调研行为越集中,这种示范效应越强。此外,对于信息披露质量较低和机构持股比例较低的公司,机构调研行为更容易引起投资者的关注,示范效应更强。研究结论验证了机构投资者的信息优势性和行为影响力,支持了投资者的信息解读能力,为机构投资者的市场引导作用提供解释依据。     

给定抽样调查费用时最优轮换率及样本容量的确定

建立了前期和现期总的调查规模即样本容量不一定相等时的样本轮换模型,并求出了给定费用时的最优样本容量及最优轮换率,并分析了3种特殊情况,其中第3种特殊情况正是[1,2]中的有关结果.     

Studying advanced mathematics in England: findings from a survey of student choices and attitudes

The UK Government has set a goal that the “vast majority” of students in England will be studying mathematics to the age of 18 by the end of the decade. The policy levers for achieving this goal include new Core Maths qualifications, designed for over 200,000 students who have achieved good grades at the age of 16 but then opt out of advanced or A level mathematics. This article reports findings from a cluster-sampled survey of over 10,000 17-year-olds in England in 2015. Participants’ views on post-16 mathematics are presented and discussed. The main finding is that they are strongly opposed to the idea of compulsory mathematical study, but are less antithetical to being encouraged to study mathematics beyond 16. We consider how attitudes vary by gender, prior attainment, study patterns and future aspirations. The article considers the implications of these findings in the current policy landscape.     

Data envelopment analysis application in sustainability: The origins,development and future directions

Sustainable development and sustainability assessment have been of great interest to both academe and practitioners in the past decades. In this study, we review the literature on data envelopment analysis (DEA) applications in sustainability using citation-based approaches. A directional network is constructed based on citation relationships among DEA papers published in journals indexed by the Web of Science database from 1996 to March 2016. We first draw the citation chronological graph to present a complete picture of literature development trajectory since 1996. Then we identify the local main DEA development paths in sustainability research by assigning an importance index, namely search path count (SPC), to each link in the citation network. The local main path suggests that the current key route of DEA applications in sustainability focus on the environmental sustainability. Through the Kamada–Kawai layout algorithm, we find four research clusters in the literature including corporate sustainability assessment, regional sustainability assessment, sustainability composite indicator construction, and sustainability performance analysis. For each of the clusters, we further identify the key articles based on citation network and local citation scores, demonstrate the developmental trajectory of the literature, and suggest future research directions.     

宁波市女性科技人才现状调查与分析

为全面、客观地了解宁波市女性科技人才在薪酬待遇、教育、科研工作、社会参与等现状,反映女性科技人才群体的意见和要求,调查组采用多阶段分层整群随机抽样法,对宁波市女性科技人才相关状况进行了全面的调查,分析了影响女性科技工作者作用发挥的原因,并提出了相应的对策与建议,维护了女性科技人才的合法权益,同时为政府部门制定女性科技人才的有关政策提供了参考.     

学生学习《高等数学》困难原因调查及统计分析

为分析学生学习<高等数学>学习困难原因,提高新建本科院校<高等数学>教学效果,我们对一所新建本科院校2005级至2007级全部本科学生进行调查.本研究主要采用问卷调查方式进行,并应用统计学方法,研究学生学习<高等数学>困难原因,探讨解决办法.     

消化道肿瘤患者术前营养状况分析

为了解消化道肿瘤患者术前的营养状况,给制订术前患者营养干预方案提供依据,运用NRS-2002和24 h回顾膳食调查法对120例消化道肿瘤患者术前进行了营养评价和膳食调查.结果表明,NRS-2002评分结果,有67.5%患者存在营养不良风险,且年龄越大营养不良风险发生率越高;膳食调查结果,消化道肿瘤患者术前实际营养素摄入...     

Admissible estimation of linear functions of characteristic values of a finite population

The problem on admissibility of estimators is considered based on the point of view of the superpopulation model. The necessary and sufficient conditions for linear estimators of an arbitrary linear function of characteristic values of a finite population to be admissible in the class of linear or all estimators are obtained respectively. Project supported by the National Natural Science Foundation of China.