What is RAT-STATS?
Answer 10: RAT-STATS is a package of statistical software tools, developed by the OIG’s Office of Audit Services. The package is designed to run on personal computers using Microsoft’s Disk Operating System (MS-DOS). RAT-STATS is used in the context of performing CIA billing reviews to: generate random numbers for selecting random samples, evaluate the sample results, and estimate a sample size for specified confidence and precision levels.