We study a multivariate extension of the univariate exponential dispersion Tweedie family of distributions. The class, referred to as the multi-variate Tweedie family (MTwF), on the one hand includes multivariate Poisson, gamma, inverse Gaussian, stable and compound Poisson distributions and on...

The testing of the goodness of fit of a data to a Poisson distribution through the Poissonness plot is an interesting way to obtain a visual standpoint of the issue. Based on a real data from the said distribution, the paper discusses how the plot can be used to detect the lack of fit of the...