Timothy Triplett is a principal research associate and senior survey methodologist with the Statistical Methods Group at the Urban Institute, where his work primarily involves studies that include survey data collection, complex sample designs, and random experimental designs. He conducts methodological research addressing such issues as estimating nonresponse bias, weighting strategies, and imputation procedures. He works extensively with the decennial census, American Community Survey, and the Annual Social and Economic Supplement to the Current Population Survey, in order to create survey weights, impute for missing data, or analyze nonresponse for the numerous surveys collected for or by the Urban Institute.

Triplett has over 25 years of survey research experience, including responsibility for national, statewide, and regional projects, sample design, developing questionnaires, and managing statistical and computer programming. He has written and presented over 25 survey methodology papers and served as the program chair for the 1998 International Field Directors and Technology Conference. He is author of a chapter on using surveys for the third edition of the Handbook of Practical Program Evaluation.