回归分析中一些R函数详细说明
例如:
Anova: Anova Tables for Linear and Generalized Linear Models (car)
anova: Compute an analysis of variance table for one or more linear model fits
(stasts)
coef: is a generic function which extracts model coefficients from objects returned
by modeling functions. coefficients is an alias for it (stasts)
coeftest: Testing Estimated Coefficients (lmtest)