StatsGuy
Statistical Consultant, Data Scientist, and Survey Methodologist. My interests and research include causal inference, analysis of complex sample survey data, sampling problems and finite area estimation, imputation techniques, and analysis of longitudinal data. I've been an R-user since 1997, so I have expertise in R, S-PLUS, SAS, SPSS, and several other statistical languages (and other non-statistical languages such as C++) too. I enjoy consulting, explaining complex methods to laypeople and teaching.