The Methodology section describes how the Census Bureau collected the Annual Survey of Public Employment & Payroll data and how the published data were generated. Select the link below for information on the sampling frame, collection periods, collection methods, editing, imputation, sampling error, response rates, and nonsampling error. The Census Bureau provides detailed information about the methods used to collect and produce statistics, including sampling, eligibility, questions, data collection and processing, data quality, review, weighting, estimation, coding operations, etc.