Missing Data, Imputation Methods play Star Role In Latest Issue

摘要

In Volume 21, Issue 3, of CHANCE, three articles are associated by their concern with missing data and methods for imputation, or filling in the missing values. Tom Krenzke and David Judkins use data from the National Education Longitudinal Survey (NELS) to illustrate a semiparametric approach to imputation in complex surveys. In the area of health, Michael Elliott describes a study of childhood obesity and some of its associated complications. Novel mixture model and multiple imputation approaches are used to address unusual observations, probable transcription errors, and missing data.