Chapter

Goodness-of-Fit

Steve Selvin

in Epidemiologic Analysis

Published in print August 2001 | ISBN: 9780195146189
Published online September 2009 | e-ISBN: 9780199864720 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195146189.003.0005
Goodness-of-Fit

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This chapter reviews Gregor Mendel's observations made on ornamental garden peas (Pisum sativum), particularly the correspondence to two specific ratios (3:1 and 2:1). It also explores the question: does Mendel's data correspond to these ratios too closely, indicating a bias in recording his experimental results? The analysis of Mendel's data illustrates a concern in most analyses of categorical data—the results are influenced, sometimes substantially, by how the categories are defined and tables constructed.

Keywords: Gregor Mendel; garden peas; correspondence; ratios

Chapter.  3409 words.  Illustrated.

Subjects: Public Health and Epidemiology

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