文章基本信息

标题：A Pedagogic Demonstration of Attenuation of Correlation Due to Measurement Error
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作者：Fisher, Christopher R
期刊名称：Spreadsheets in Education
印刷版ISSN：1448-6156
出版年度：2014
卷号：7
期号：1
页码：4
出版社：Faculty of Information Technology, Bond University
摘要：Measurement error is an inescapable reality in most domains of research. Incidental variation in experimental setting, participant motivation and mood are among the multitude of factors that introduce error into measurement. I created a pedagogic spreadsheet that demonstrates the attenuation of correlation resulting from measurement error. The spreadsheet allows students to explore the sensitivity of the Spearman correction for attenuation of correlation to violation of assumptions. The spreadsheet demonstrates that the Spearman correction may not be advisable under certain circumstances. Some students conflate measurement error with sampling error. To clarify this misunderstanding, the spreadsheet uses a Monte Carlo simulation to demonstrate the difference between sampling error and measurement error and how they interact in practice.
关键词：Reliability; Measurement Error; Attenuation; Correlation; Sampling Error