Dardanoni, Valentino; Modica, Salvatore; Peracchi, Franco - Centro di Studi Internazionali Sull'Economia e la … - 2009
A common problem in applied regression analysis is that covariate values may be missing for some observations but imputed values may be available. This situation generates a trade-off between bias and precision: the complete cases are often disarmingly few, but replacing the missing observations...