New Developments on the Non-Central Chi-Squared and Beta Distributions

Carlo Orsi
2022 Austrian Journal of Statistics  
New formulas for the moments about zero of the Non-central Chi-Squared and the Non-central Beta distributions are achieved by means of novel approaches. The mixture representation of the former model and a new expansion of the ascending factorial of a binomial are the main ingredients of the first approach, whereas the second one hinges on an interesting relationship of conditional independence and a simple conditional density of the latter model. Then, a simulation study is carried out in
more » ... to pursue a twofold purpose: providing numerical validations of the derived moment formulas on one side and discussing the advantages of the new formulas over the existing ones on the other.
doi:10.17713/ajs.v51i1.1106 fatcat:si2sak47jbhzppnu6rfylqmcfi