共查询到20条相似文献，搜索用时 15 毫秒
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Gorroochurn P 《Teaching Statistics》2011,33(3):81-82
The correlation coefficient is commonly used to indicate the quality of fit in regression. This practice is questionable. 相似文献
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The χ2 goodness‐of‐fit test is often one of the first tests of hypotheses encountered by students. When some of the expected frequencies are small, classes need to be combined. A real‐life example is given that illustrates a surprising sensitivity of the results of the test to the way in which such combinations are chosen. 相似文献
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Julio H. Cole 《Teaching Statistics》2010,32(3):78-80
W.A. Wallis studied vacancies in the US Supreme Court over a 96‐year period (1837–1932) and found that the distribution of the number of vacancies per year could be characterized by a Poisson model. This note updates this classic study. 相似文献
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The surprising property of many data sets that their first significant digits follow Benford's Law provides examples that can pique and hold students’ interest. Several ideas for student activities are presented. 相似文献
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Susan Meacock 《Teaching Statistics》2003,25(1):17-21
This article shows how data from a television game show can be used as a basis for illustrating many statistical procedures. 相似文献
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The number of increases a particular stock makes over a fixed period follows a Poisson distribution. This article discusses using this easily‐found data as an opportunity to let students become involved in the data collection and analysis process. 相似文献
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Kathleen M Shannon 《Teaching Statistics》1999,21(2):42-45
Issues of measurement are fundamental in statistics but often overlooked in introductory courses. This interactive exercise encourages students to think critically about how things are measured. 相似文献
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This paper deals with the analysis of cricket match results from the ICC World Cup 2011. We believe that such data provide good material for interesting classroom exercises. 相似文献
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Zbigniew Kmietowicz 《Teaching Statistics》1994,16(3):70-74
This article examines the sampling error of the lead of one political party over another as observed in a random sample of voters. The sample size needed to achieve a certain precision is also investigated. 相似文献
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农业投入产出变量的主成分回归分析模型 总被引：3，自引：0，他引：3
运用主成分回归分析方法,建立了关于我国农业投入产出诸变量的回归模型,同时消除了多重共线性,并且模型都达到了很高的拟合优度,体现了主成分回归分析在消除回归模型中的多重共线性的优越性.研究具有一定的实际意义,可用于对农业产出进行预测及控制. 相似文献
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从维熙与索尔仁尼琴分别是中苏"大墙文学"的代表作家,他们的作品以上个世纪的劳改营为背景,描写了一批因政治运动而被劳改之人的命运。两位作家特别关注了劳改犯们在环境极其恶劣的劳改营里人性的善良之处,中国作家从维熙笔下的人物都有着"圣人"式的善良——似真金般,不论身处何境都能以中国传统道德意义上的"善"去帮助他人;而索尔仁尼琴笔下的人物则心怀基督式的怜悯之善,充满着生命的情怀,活出自己的原则与立场。 相似文献
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蔡奇航 《乐山师范学院学报》2013,(8):130-133
会计是一种艺术,具有艺术的自然与纯真、独创与齐放等特点;会计教学理应向学生传到"真善美"。会计教学真善美的基础在于教师是否围绕教学内容,从真善美的角度上深入研究、领悟和传播教材内外的真善美因素,以及学生对真善美的辨识、把握与追求等。要实施和实现会计教学的真善美,就必须在会计教学中以艺术的手段和方法让真善美得以切实感知、得到有效组织和积极导向。 相似文献
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This article evaluates and explores the correlation (+0.892) between the United States federal election winner and the most recent Washington Redskin home‐game winner, a relation perfectly linked for 17 of 18 elections since franchise inception in 1936. 相似文献
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Chris du Feu 《Teaching Statistics》1999,21(1):8-10
A classroom practical activity for sorting lists of numbers is described, leading to some statistical analysis. 相似文献