Chapter 4. The Laws of Probability

  1. Robert C. Elston1 and
  2. William D. Johnson2

Published Online: 31 OCT 2008

DOI: 10.1002/9780470740781.ch4

Basic Biostatistics for Geneticists and Epidemiologists: A Practical Approach

Basic Biostatistics for Geneticists and Epidemiologists: A Practical Approach

How to Cite

Elston, R. C. and Johnson, W. D. (2007) The Laws of Probability, in Basic Biostatistics for Geneticists and Epidemiologists: A Practical Approach, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470740781.ch4

Author Information

  1. 1

    Department of Epidemiology and Biostatistics, Case Western Reserve University, USA

  2. 2

    Pennington Biomedical Research Center, Louisiana State University System, USA

Publication History

  1. Published Online: 31 OCT 2008
  2. Published Print: 24 OCT 2007

ISBN Information

Print ISBN: 9780470024898

Online ISBN: 9780470740781

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Keywords:

  • three definitions of probability;
  • the probability of either of two events, the joint probability of two events, conditional probability, mutually exclusive events, independent events;
  • Bayes' theorem;
  • likelihood ratio

Summary

This chapter contains sections titled:

  • Definition of Probability

  • The Probability of Either of Two Events: A or B

  • The Joint Probability of Two Events: A and B

  • Examples of Independence, Nonindependence and Genetic Counseling

  • Bayes' Theorem

  • Likelihood Ratio

  • Summary

  • Further Reading

  • Problems