It depends on the method, but generally the more the better! For group analytics, a minimum of five top performers is required but 20-30 is recommended if possible. For the job analysis survey, 5 job experts are recommended; however, we can create the benchmark with as little as 1 expert if needed. For employee metrics correlational analysis, typically 50 employees are required, but 100 or more is preferred. The more data, the more accurate and predictive the benchmarks will be.