Test for over/underdispersion

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Description

This function performs a simulation-based test for over/underdispersion

Usage

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testOverdispersion(simulationOutput, alternative = "overdispersion",
  plot = F)

Arguments

simulationOutput

an object with simulated residuals created by simulateResiduals

alternative

whether to test for "overdispersion", "underdispersion", or "both"

plot

whether to plot output

Details

This test compares the approximate deviance (via squared pearson residuals) with the same quantity from a number of simulated models. It is MUCH slower than the parametric alternative testOverdispersionParametric, but potentially more exact in situations where one would expect problems with the chi2 test employed in the parametric test

See Also

testSimulatedResiduals, testSimulatedResiduals, testZeroInflation, testTemporalAutocorrelation, testSpatialAutocorrelation, testOverdispersionParametric