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Top 10 Countries

Each year, Statistical PERT is downloaded by thousands of people living in over 100 countries.
Here are the Top 10 countries for 2019.

United States
United Kingdom
India
Canada
Australia
Germany
Italy
Spain
France
Mexico

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 / Microsoft 365).

All Statistical PERT downloads are FREE to use, modify and share!  No registration, no macros, no adware, no cost, and no hassle!

Before downloading any files from this site, please read this site’s Privacy Policy, No Warranty Claim, and Terms of Agreement.  If you choose to download any files from this site, you are giving your express acceptance of this site’s Privacy Policy, No Warranty Claim, and Terms of Agreement.  If you do not agree with any of these, please do not use this site or download any files from this site.

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.

Statistical PERT® Normal Edition, Version 4.2.1, released May 26, 2020, adds a little burn-up chart formatting and made it easier to use the Agile Burnup worksheet (you don’t have to drag down the latest entry in the Product Backlog column to match the last iteration finish date used in the forecast).  Earlier this month, I also released Version 4.1 which added new statistics to the Monte Carlo simulation worksheet.  These are minor updates to Version 4 which was released January 2020.  Version 4 includes these new and enhanced features:  Monte Carlo simulation tab for a single, random variable; agile release burn-up chart; an option to use your own, explicit standard deviation; 10 subjective judgments (up from just 7) on how likely the most likely outcome really is; improved formatting.  Statistical PERT Normal Edition uses Excel’s two normal distribution functions, NORM.DIST and NORM.INV to create probabilistic estimates.

Statistical PERT® Beta Edition, Version 3, released May 4, 2020, is a major update to the Beta Edition.  Version 3 has two new features and one enhanced feature.  The first new feature is a Monte Carlo simulation worksheet for modeling a single, random variable using the beta distribution.  Another new feature is SPERT® Scheduler, which allows for easy, probabilistic scheduling of plan-driven projects.  Finally, the Agile Forecast worksheet is enhanced to allow for a side-by-side comparison of up to three scenarios, making it easier to do what-if analysis.  Statistical PERT Beta Edition uses Excel’s two beta distribution functions, BETA.DIST and BETA.INV to create probabilistic estimates, plus the normal distribution functions, NORM.DIST and NORM.INV, to calculate probabilities assuming the Central Limit Theorem for summary rows.

SPECIAL RELEASE for smartphone users – SPERT® Mobile!  Download this special version of Statistical PERT Normal Edition that makes it easy to create probabilistic estimates right on your iPhone or Android smartphone.  You must have Excel Mobile installed on your device to use Statistical PERT.  Excel Mobile is a free download on iTunes and Google Play.

Are you using an iPhone, but don’t have the free Microsoft Excel app for iPhone?  Download it from Microsoft now.

Are you using an Android smartphone, but don’t have Excel installed?  Download it from Google Play now.

Statistical PERT® Normal Edition

Statistical PERT® Normal Edition uses Excel’s two normal distribution functions, NORM.DIST and NORM.INV.

Download the SPERT® Normal Edition (macro-free) example workbook

Download the SPERT® Normal Edition (macro-free) template

Download the Quick Start guide for Statistical PERT® Normal Edition to learn how to use Statistical PERT Normal Edition.

Subscribe to my free, monthly newsletter to receive tips & tricks and new release notifications via email.

Learn more about Statistical PERT!  Attend my next, free webinar or check out these site resources.

Can’t download from this site?
Try downloading SPERT® Normal Edition Version 4 from GitHub or PMI’s ProjectManagement.com.

Statistical PERT® Beta Edition

Statistical PERT® Beta Edition uses Excel’s two beta distribution functions, BETA.DIST and BETA.INV.

Download the SPERT® Beta Edition (macro-free) workbook for Coronavirus (COVID-19) incubation period

Download the SPERT® Beta Edition (macro-free) example workbook

Download the SPERT® Beta Edition (macro-free) template

Download the Quick Start guide for the Statistical PERT® Beta Edition to learn how to use Statistical PERT Beta Edition.

Subscribe to my free, monthly newsletter to receive tips & tricks and new release notifications via email.

Learn more about Statistical PERT!  Attend my next, free webinar or check out these site resources.

Can’t download from this site?
Try downloading SPERT® Beta Edition Version 3 from GitHub or PMI’s ProjectManagement.com.

Bonus Downloads

Soothsayer™

Download Soothsayer™ for Project Schedule or Budget Contingency

Discover MCS

Discover how Monte Carlo Simulation (MCS) solves estimation problems with this easy-to-understand spreadsheet

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