Noncentrality Parameters in Chi-Squared Goodness-of-Fit Analyses with an Application to Log-Linear Procedures
卡方拟合优度分析的非中心参数及其对数线性应用
Limiting noncentral chi-squared distributions are obtained for statistics commonly used in sequential stepwise testing to select from a general class of functions the correct model for T multinomial cell frequencies in an m-way cross-classification table. The simple quadratic form expressions are used to establish the asymptotic independence of tests of nested models used in stepwise selection. In an application of these results, the quadratic form expression for the…