I investigate the use of Pearson's chi-square statistic, the Maximum Likelihood Ratio statistic for Poisson distributions, and the chi-square-gamma statistic (Mighell 1999, ApJ, 518, 380) for the ...

Applying the standard weighted mean formula, [sum_i {n_i sigma^{-2}_i}] / [sum_i {sigma^{-2}_i}], to determine the weighted mean of data, n_i, drawn from a Poisson distribution, will, on average, ...

A chi-square (**\u03c7**^2^) ^^statistic is a test that measures how a model compares to genuine noticed data. The data utilized in working out a chi-square ...

This is a preview. Log in through your library . Abstract The null hypothesis that the proportions or relative abundance among j mutually exclusive categories (e.g., species or sizes) is the same for ...

Zero-inflated distributions are common in statistical problems where there is interest in testing homogeneity of two or more independent groups. Often, the underlying distribution that has an inflated ...

The Chi-Square test is a useful statistical tool that helps researchers determine whether there is a significant relationship between two categorical variables within a given dataset. It is often used ...

Department of Biostatistics, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA. Zero-inflated distributions―a mixture of a point distribution and some other ...