14. Count Data
Published Online: 6 NOV 2012
DOI: 10.1002/9781118448908.ch14
Copyright © 2013 John Wiley & Sons, Ltd
Book Title
The R Book, Second Edition
Additional Information
How to Cite
Crawley, M. J. (2012) Count Data, in The R Book, Second Edition, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781118448908.ch14
Publication History
- Published Online: 6 NOV 2012
- Published Print: 7 DEC 2012
ISBN Information
Print ISBN: 9780470973929
Online ISBN: 9781118448908
- Summary
- Chapter
Keywords:
- count data, collected by scientists, statisticians as counts;
- regression with Poisson errors;
- Poisson errors, residual deviance equal to residual degrees of freedom;
- analysis of deviance with count data;
- analysis of covariance with count data;
- frequency distributions, and Poisson process;
- good candidate distribution, as negative binomial distribution;
- log-linear models, and overdispersion;
- negative binomial errors, using a negative binomial model
Summary
This chapter contains sections titled:
-
A regression with Poisson errors
-
Analysis of deviance with count data
-
Analysis of covariance with count data
-
Frequency distributions
-
Overdispersion in log-linear models
-
Negative binomial errors