https://www.sulprobil.de/tags/refa/ Recent content in REFA on Sulprobil Hugo en Sun, 07 Jun 2026 13:22:00 +0100 https://www.sulprobil.de/refa_time_sclicing_en/ Sun, 07 Jun 2026 13:22:00 +0100 https://www.sulprobil.de/refa_time_sclicing_en/ <h2 id="abstract">Abstract</h2> <p>REFA, the Association for Work Design, Business Organization and Business Development is Germany&rsquo;s oldest organization for work design, business organization and business development. They offer training similar to Six Sigma or Lean Management.</p> <p>If you like to perform a relatively accurate analysis of one month&rsquo;s hotline calls, you can apply this approach:</p> <p><img src="https://www.sulprobil.de/REFA_Time_Slicing.png" alt="REFA_Time_Slicing"></p> <p>Named ranges and formulas:</p> <p><img src="https://www.sulprobil.de/REFA_Timeslicing_Formulas.png" alt="REFA_Timeslicing_Formulas"></p> <h2 id="download">Download</h2> <p>Please read my <a href="https://www.sulprobil.de/about/disclaimer_en/" title="Disclaimer">Disclaimer</a>.</p> <p><a href="https://www.sulprobil.de/Time_Class_Estimate.xlsx">Time_Class_Estimate.xlsx</a> [17 KB Excel file, open and use at your own risk]</p>