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Eye Fitting Straight Lines

 

作者: Frederick Mosteller,   AndrewF. Siegel,   Edward Trapido,   Cleo Youtz,  

 

期刊: The American Statistician  （Taylor Available online 1981）
卷期: Volume 35, issue 3  

页码: 150-152

 

ISSN:0003-1305

 

年代: 1981

 

DOI:10.1080/00031305.1981.10479335

 

出版商: Taylor & Francis Group

 

关键词: Least squares;Regression;Subjective fitting;Principal components

 

数据来源: Taylor

 

摘要:

Because little is known about properties of lines fitted by eye, we designed and carried out an empirical investigation. Inexperienced graduate and postdoctoral students instructed to locate a line for estimatingyfromxfor four sets of points tended to choose slopes near that of the first principal component (major axis) of the data, and their lines passed close to the centroids. Students had a slight tendency to choose consistently either steeper or shallower slopes for all sets of data.

 

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