Survey Weight Diagnostic Tests
Difference-in-Coefficients Test for Survey Weights
Internal: check full rank before solving
Internal helper: Mahalanobis coefficient distance
Internal helper: Evaluate one permutation
Internal helper: Predicted mean statistic
Internal helper: Weighted least squares fit
Estimating Equations Test for Informative Sampling (Linear Case)
Likelihood-Ratio Test for Informative Survey Weights (In production)
Permutation test for weight informativeness in survey regression
Plot method for permutation test objects
Pfeffermann-Nathan Predictive Power Test (svyglm, K-fold CV, fold-mean...
Run All Diagnostic Tests for Informative Weights
svytest: Survey Weight Regression Diagnostics
DuMouchel-Duncan WA test
Pfeffermann-Sverchkov Test 1
Pfeffermann-Sverchkov Test 2
Weight-Association Tests for Survey Weights
Wu-Fuller test
Provides diagnostic tests for assessing the informativeness of survey weights in regression models. Implements difference-in-coefficients tests (Hausman 1978 <doi:10.2307/1913827>; Pfeffermann 1993 <doi:10.2307/1403631>), weight-association tests (DuMouchel and Duncan 1983 <doi:10.2307/2288185>; Pfeffermann and Sverchkov 1999 <https://www.jstor.org/stable/25051118>; Pfeffermann and Sverchkov 2003 <ISBN:9780470845672>; Wu and Fuller 2005 <https://www.jstor.org/stable/27590461>), estimating equations tests (Pfeffermann and Sverchkov 2003 <ISBN:9780470845672>), and non-parametric permutation tests. Includes simulation utilities replicating Wang et al. (2023 <doi:10.1111/insr.12509>) and extensions.