Analysing continuous proportions in ecology and evolution: A practical introduction to beta and Dirichlet regression
Wageningen University & Research · University of Antwerp · +1 more institution
Abstract
Abstract Proportional data, in which response variables are expressed as percentages or fractions of a whole, are analysed in many subfields of ecology and evolution. The scale‐independence of proportions makes them appropriate to analyse many biological phenomena, but statistical analyses are not straightforward, since proportions can only take values from zero to one and their variance is usually not constant across the range of the predictor. Transformations to overcome these problems are often applied, but can lead to biased estimates and difficulties in interpretation. In this paper, we provide an overview of the different types of proportional data and discuss the different analysis strategies available.…
Citation impact
- FWCI
- 42.36
- Percentile
- 100%
- References
- 60
Authors
2Topics & keywords
- Statistics
- Mathematics
- Negative binomial distribution
- Regression analysis
- Multinomial logistic regression
- Binomial regression
- Econometrics
- Regression