## Meanvariance power laws

In the ecological literature, the mean-variance power laws are most often associated with the name L. R. Taylor, who popularized them in

Figure 3.14. The diagnostic for a mean-variance power law is a log-log plot of variance versus mean, as shown here for some groundfish survey data from the West Coast of North America (with thanks to E. J. Dick). When the slope is 2, the diagnostic suggests gamma/negative binomial models may be appropriate.

Figure 3.14. The diagnostic for a mean-variance power law is a log-log plot of variance versus mean, as shown here for some groundfish survey data from the West Coast of North America (with thanks to E. J. Dick). When the slope is 2, the diagnostic suggests gamma/negative binomial models may be appropriate.

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