Generalized audit software will facilitate reviewing the entire inventory file to look for those items that meet the selection criteria. Generalized audit software provides direct access to data and provides for features of computation, stratification, etc. Test data are used to verify programs, but will not confirm anything about the transactions in question. The use of statistical sampling methods is not intended to select specific conditions, but is intended to select samples from a file on a random basis. In this case, the IS auditor would want to check all of the items that meet the criteria and not just a sample of them. An integrated test facility allows the IS auditor to test transactions through the production system.