It is proved that the scaled deviance of an inverse Gaussian sample of size n can be expressed as a sum of n - 1 independent chi-square variates. Applications to prediction intervals and squared ...
Wald's method constructs test statistics having chi-squared limiting distributions from estimators having nonsingular multivariate normal limiting distributions, using the inverse of the covariance ...
What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...