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Joseph G. Eisenhauer 《Teaching Statistics》2003,25(3):76-80
This article describes situations in which regression through the origin is appropriate, derives the normal equation for such a regression and explains the controversy regarding its evaluative statistics. Differences between three popular software packages that allow regression through the origin are illustrated using examples from previous issues of Teaching Statistics. 相似文献
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David Trumpower 《Teaching Statistics》2010,32(1):17-20
This article describes a fun activity that can be used to help students make links between statistical analyses and their real-world implications. Although an illustrative example is provided using analysis of variance, the activity may be adapted for use with other statistical techniques. 相似文献
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我国高校扩招自1999年始,在社会上引起了极大反响。但对于高校大规模扩招的合理性和科学性,也不乏质疑,究其原因,源于高校招生人数的确定,缺乏数据统计、定量分析。显然,高校招生受各种条件制约,有着多类型、多方面的影响因素。本文在对我国普通院校本科招生规模进行理论分析的基础上,用含虚拟变量的回归分析方法构建出高校招生规模的实证模型。提出今后中国高等教育的规模应综合考虑,决策者应理性地对待中国高校的发展规模。 相似文献
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David Trumpower 《Teaching Statistics》2013,35(1):57-60
This article describes an assessment activity that can show students how much they intuitively understand about statistics, but also alert them to common misunderstandings. How the activity can be used formatively to help improve students' conceptual understanding of analysis of variance is discussed. 相似文献
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Fernando De Maio 《Teaching Statistics》2014,36(2):52-57
Regression analysis is an important aspect of most introductory statistics courses in sociology but is often presented in contexts divorced from the central concerns that bring students into the discipline. Consequently, we present five lesson ideas that emerge from a regression analysis of income inequality and mortality in the USA and Canada. 相似文献
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虚拟变量在线性回归模型中的一种应用 总被引:1,自引:0,他引:1
刘亦农 《南通职业大学学报》2000,14(2):34-36
若干特异点处的统计量容易导致回归方程拟合不足,本文引入虚拟变量(Dummy Variables)给出一种较为实用的解决途径。 相似文献
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重庆财政收入与经济增长密切相关,与第二产业产值和第三产业产值有着密切关系。重庆市国民经济高速而稳定的增长,财政收入也保持了较大幅度的增加,但仍赶不上现价GDP的增长。重庆的财政收入发展较为良性。 相似文献
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Eric D. Nordmoe 《Teaching Statistics》2008,30(2):34-38
This article reports on a delicious finding from a recent study claiming a causal link between dark chocolate consumption and blood pressure reductions. In the article, I provide ideas for using this study to whet student appetites for a discussion of statistical ideas, including experimental design, measurement error and inference methods. 相似文献
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我国区域高等教育发展水平的统计分析 总被引:3,自引:0,他引:3
李健宁 《山西财经大学学报(高等教育版)》2007,(4):1-4
文章利用数理统计的方法,对我国31个省、市、自治区的高等教育发展水平进行排序和分类,并对影响高等教育发展的因素进行了相关分析与回归分析,以便从宏观上把握我国各地区高教发展的现状,为更好地指导和规划高等教育事业的健康发展提供一定的科学依据。 相似文献
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大学生成绩的综合评价及分析 总被引:2,自引:0,他引:2
本文运用主成分分析对大学生四年的学习成绩进行综合评价,并对主成分得分进行单因素方差分析,以期更好地对大学生的学习成绩进行综合评价。 相似文献
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用多元线性回归法,建立了肺活量与胸围体重间的回归方程,从而展示了人体部分主要机能与形态指标间的量化关系。 相似文献
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林强 《数学爱好者(高二版)》2008,(3)
消费函数模型是表现消费者行为的重要方式,也是研究国民收入、消费支出、积累等宏观经济变量之间相互关系的有效手段.然而消费函数模型理论众多,应根据本国和本地的实际情况,采取合理的消费函数模型.本文利用最小二乘法估计出在消费函数理论假设条件下四种山东省农村居民的消费函数模型,并对其进行分析和比较.找出了一种比较适合我省农村居民的消费函数模型. 相似文献
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James Nicholson 《Teaching Statistics》1996,18(2):49-51
This article attempts to integrate the crucial ideas of sampling and estimation in the teaching of linear regression. It won first prize in the recent PSI competition. 相似文献
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Students who have been taught regression properly are certainly familiar with the dangers and curiosities to which the regression analysis leads when only two data points are available. However, one may ask whether students are familiar with the effects of adding a third observation into this data set. The purpose of this article is to illustrate some unexpected phenomena related to this situation using a specific map technique. 相似文献
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Anwar H. Joarder 《Teaching Statistics》2009,31(2):55-58
This article demonstrates that the variance of three or four observations can be expressed in terms of the range and the first order differences of the observations. A more general result, which holds for any number of observations, is also stated. 相似文献
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从随机变量的概念、作用和学习方法等几个方面对随机变量进行了探讨,希望能为概率统计课程的初学者以教师教学提供一些有价值的参考。 相似文献