Statistical PERT® (SPERT®) is a freely licensed, probabilistic, estimation technique that uses the built-in statistical functions of Microsoft Excel®. Use Statistical PERT to estimate uncertainties with bell-shaped risk properties, like: task duration, work effort, revenue, expenses, agile release dates, project portfolios, event attendance, and more.
There is nothing to install. Just download a Statistical PERT example workbook or template, then open the downloaded files with Microsoft Excel (2010 / 2013 / 2016 / 2019 / Office 365).
All Statistical PERT downloads are FREE to use, modify and share! No registration, no macros, no adware, no cost, and no hassle!
Since 2015, thousands of project managers, business managers, entrepreneurs, Scrum Masters, agile coaches, university professors, college students, and other business professionals from dozens of countries around the world have downloaded and used Statistical PERT to estimate uncertain future outcomes.
The Project Management Institute (PMI) offers Statistical PERT templates to its membership through its sister site, ProjectManagement.com, along with published articles on Statistical PERT like this one and this one and this newer one published January, 2020 and this latest one published February, 2020 (note: you must be a PMI member to read these articles). Thanks to PMI, tens of thousands of project professionals worldwide have discovered and downloaded the freely licensed Statistical PERT example spreadsheets, with hundreds more each week who discover Statistical PERT.
Important note: All spreadsheet files downloaded from this site are distributed under the GNU General Public License published by the Free Software Foundation. You may redistribute any downloaded spreadsheet files and/or modify them under the terms of version 3 of that license, or (at your option) any later version. Statistical PERT® and SPERT® are protected, federally-registered trademarks. Soothsayer™ and Estimation Made Easy™ are non-federally-registered trademarks. If you modify, in any material way, any spreadsheet file downloaded from this site, you agree to remove these trademarked names from the modified spreadsheet(s). On both verbatim and modified copies of spreadsheet files that you download from this site, you must always display the original copyright notices showing the spreadsheet’s copyright year and and copyright holder information (example: “Original Copyright © 2015-2020, William W. Davis, MSPM, PMP”). Moreover, a modified spreadsheet must clearly identify the changes you or others made, in accordance with the GNU General Public License. If you have questions about what it means to materially modify a spreadsheet, please contact me. All spreadsheet files on this site are freely available for downloading in the hope that they will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.