Lean Six Sigma statistics, inside Excel.
TransFormX is a referral partner of SigmaXL Inc. SigmaXL is a statistical analysis add-in for Microsoft Excel that covers the analysis a DMAIC project needs, on the spreadsheet the data already sits in. It is the statistics package TransFormX uses on client projects.
TransFormX receives a commission on orders placed through the order links on this page. Disclosure
One tool from charter to control plan
The same five stages TransFormX works through on an engagement, with the SigmaXL tools TransFormX uses at each one.
Define
Frame the problem and the process boundary.
Team and project charter, SIPOC diagram, cause and effect (XY) matrix, Pareto charts.
See the define tools →Measure
Prove the measurement before trusting the numbers.
Type 1 gage study, Gage R&R, attribute MSA, process capability and process sigma level, including nonnormal data.
See the measure tools →Analyse
Test the suspected causes against the data.
Hypothesis test selection guide, t-tests, ANOVA, chi-square and nonparametric tests, multiple and logistic regression, multi-vari charts.
See the analyse tools →Improve
Find the settings that move the result.
Design of experiments: 2-level factorial and screening, definitive screening, response surface and optimal designs, with multiple response optimisation. FMEA template.
See the improve tools →Control
Hold the gain once the project closes.
Control chart selection guide, individuals, X-bar, attribute and Laney charts, EWMA and CUSUM, control plan template.
See the control tools →What to check first
Platform
Windows only
Runs in Microsoft Excel for Windows. It does not run in Excel for Mac or Excel Online.
Trial
30 days, every feature
Full access for 30 days with no credit card. Run it on a live dataset before committing to a licence.
Rolling out to a team
Silent installation
IT can deploy SigmaXL across multiple computers without a user-by-user install, which matters for a belt cohort starting on the same day.
Learning SigmaXL
Published by SigmaXL Inc. and free to use, whether or not you have a licence. Each link opens in a new tab.
Web demos
Recorded demos to watch on YouTube or download, with the slides and datasets.
sigmaxl.com ↗Virtual menu
Every menu item in SigmaXL, each linked to its feature page.
sigmaxl.com ↗YouTube channel
Video tutorials from SigmaXL Inc.
youtube.com ↗Knowledge base
Help articles from the SigmaXL support desk.
sigmaxlinc.atlassian.net ↗System requirements
Supported versions of Windows and Microsoft Excel.
sigmaxl.com ↗SigmaXL website
Product information, pricing and support from SigmaXL Inc.
sigmaxl.com ↗Have the software, need the result?
The software runs the test. Choosing the right test, on data that has been checked, against a baseline that will stand up, is the work. TransFormX runs DMAIC projects and belt programmes on your own live problems.
Taking new work from October 2026.
Referral disclosure
TransFormX receives a commission from SigmaXL Inc. on licences ordered through the order links on this page. Buying SigmaXL is not a condition of any TransFormX engagement, and TransFormX works in whichever statistical software a client already licenses.
SigmaXL is a trademark of SigmaXL Inc. TransFormX Consultancy Limited is independent of SigmaXL Inc. Product details on this page are taken from sigmaxl.com; check there for current versions and pricing.