8/24/2023 0 Comments Machine dredge meanHowever, one potential drawback of Poisson regression is that it may not accurately describe the variability of the counts.Ī Poisson distribution is parameterized by \(\lambda\), which is both its mean and variance. For example, we might model the number of documented concussions to NFL quarterbacks as a function of snaps played and the total years experience of his offensive line. This is a generalized linear model where a response is assumed to have a Poisson distribution conditional on a weighted sum of predictors. When it comes to modeling counts (i.e., whole numbers greater than or equal to 0), we often start with Poisson regression.
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