Overdispersion
= Overdispersion
{wiki}
Overdispersion occurs when observed conditional variation exceeds that prescribed by a statistical model. For count data it commonly means variance greater than the mean assumed by a Poisson model.
= Overdispersion
{wiki}
Overdispersion occurs when observed conditional variation exceeds that prescribed by a statistical model. For count data it commonly means variance greater than the mean assumed by a Poisson model.