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A discrete distribution defined on the non-negative integers that has the property that the mean is equal to the variance.

1 vote
1 answer
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Frequency Data, Model Choice (Poisson with Offset, Fractional Regression)

I have text data and am interested in estimating the effect of some covariate on word frequency. All the frequencies are very small. The unit of observation is a single document. I'm trying to think t …
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