Do-It-Yourself Statistics: A Computer-Assisted Likelihood Approach to Analysis of Data From Genetic Crosses

Corresponding author: Leonard G. Robbins, Università di Siena, Via P. A. Mattioli 4, 53100 Siena, Italy., robbins{at}unisi.it (E-mail)

Graduate school programs in genetics have become so full that courses in statistics have often been eliminated. In addition, typical introductory statistics courses for the "statistics user" rather than the nascent statistician are laden with methods for analysis of measured variables while genetic data are most often discrete numbers. These courses are often seen by students and genetics professors alike as largely irrelevant cookbook courses. The powerful methods of likelihood analysis, although commonly employed in human genetics, are much less often used in other areas of genetics, even though current computational tools make this approach readily accessible. This article introduces the MLIKELY.PAS computer program and the logic of do-it-yourself maximum-likelihood statistics. The program itself, course materials, and expanded discussions of some examples that are only summarized here are available at http://www.unisi.it/ricerca/dip/bio_evol/sitomlikely/mlikely.html.

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