ERIC Number: EJ1064200
Record Type: Journal
Publication Date: 2015-Jun
Abstractor: As Provided
Explorations in Statistics: The Analysis of Change
Curran-Everett, Douglas; Williams, Calvin L.
Advances in Physiology Education, v39 n2 p49-54 Jun 2015
Learning about statistics is a lot like learning about science: the learning is more meaningful if you can actively explore. This tenth installment of "Explorations in Statistics" explores the analysis of a potential change in some physiological response. As researchers, we often express absolute change as percent change so we can account for different initial values of the response. But this creates a problem: percent change is really just a ratio, and a ratio is infamous for its ability to mislead. This means we may fail to find a group difference that does exist, or we may find a group difference that does not exist. What kind of an approach to science is that? In contrast, analysis of covariance is versatile: it can accommodate an analysis of the relationship between absolute change and initial value when percent change is useless.
Descriptors: Statistics, Statistical Analysis, Mathematical Applications, Problem Solving, Mathematical Concepts, Mathematics Activities, Teaching Methods, Maximum Likelihood Statistics, Educational Strategies, Educational Practices, Physiology, Biofeedback
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A