Solved – Probability distribution for heavy zero, right skewed data

distributionsmultiple regressionprobabilityr

My question is almost identical to this one. I'm searching for a probability distribution for skewed data that allows for zeros. The purpose is to fit a GLM model. My data on species-area distributions are heavy right skewed. Additional variables are "partitioned area" according to latitude- so area in tropical and temperate zones, thus the data now includes zeros.

So my question is; is there a probability distribution, e.g. similar to the log-normal, but which allows for zeros?

Any pointers would be highly appreciated.

UPDATE

Histograms of my area data

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Best Answer

The tweedie distribution is in the exponential family, hence can be used in a GLM context, and it allows for the occurrence of zeroes in the response variable. You could see if this suits your purpose.

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