Stat-Ease® Design-Expert®

Statistics made easy ®



Make breakthrough improvements to your product and process with Design-Expert software. Screen for vital factors and components, characterize interactions and, ultimately, achieve optimal process settings and product recipes. Set flags and explore contours on interactive 2D graphs; then visualize the response surface from all angles with rotatable 3D plots. Finally, maximize desirability for all your responses simultaneously and overlay them to see the “sweet spot” meeting all specifications. Design-Expert makes it incredibly easy to apply powerful multifactor testing tools.

New Release: Version 12!

  • The new release of Design-Expert includes many new additions to its design, analysis, and visualization components. All done while keeping our intuitive and easy-to-use interface intact.


Design Your Experiment

Design-Expert provides powerful tools to lay out an ideal experiment on your process, mixture or combination of factors and components. When in doubt, build it stout via in-line power calculations and the ability to add blocks and center points. Design-Expert’s design wizards and intuitive layouts such as the stoplight configuration for two-level factorials make it all far easier than you’d even imagine. Check it out!

Analyze Your Data

Design-Expert makes it easy to see what, if anything, emerges as statistically significant and how to model the results most precisely. It provides the confidence you need to present and, perhaps, publish your findings. Don’t take our word for it, test it out with one or more of the data sets that come with the software.

Visualize Your Results

Design-Expert offers a wide selection of graphs that help you identify standout effects and visualize your results. Its outputs create a strong impression when you communicate your findings to supervisors and peers. Download the free trial today, skim through the response surface tutorial provided under ‘Help’, and see for yourself.

Go to details and ordering information on the books listed above.

What’s New

Version 12 of Design-Expert® is centered around the long awaited Logistic Regression analysis option, which allows you to analyze data that are binary in nature (true or false, zero or one, pass or fail). In addition, we have added a few new general plotting tools, improved the legend, and moved more graphs into a notebook (multi-pane) view.

Here are the highlights:

Logistic Regression

  • Responses with binary data (every cell is a 0 or 1) will have a Logistic Regression option on the Transform tab.
  • Chi-squared tests for logistic regression model term significance.
  • McFaddenAdj. McFadden, and Tjur pseudo-R-squared statistics are available for logistic regression.
  • Binary responses can be optimized using criteria based on the probability of success or failure.


  • Model Graphs have been moved to a notebook interface.
  • You can create multiple graphs simultaneously in side by side views.
  • All graphs now have a dockable legend that can be moved independently of the graph.
  • The legend can also be docked to the right or bottom of the graph via the right-click menu.
  • Elements in the legend can be toggled individually via the right-click menu.
  • The font size of the legend can be increased or decreased by hovering over it, holding control, and using the mouse scroll wheel.
  • histogram of any column of data can be generated in the Graph Columns node.
  • You can set a third axis on the Graph Columns scatterplot to make it into a 3d scatterplot.
  • Effects graphs have been moved to a notebook interface and can be compared side by side.
  • The Cube plot can now be toggled between observed and predicted values.
  • Pairwise comparisons when clicking on a point in Interaction or One Factor plots are now available in a separate toolbox.

Categoric Coding

  • Categoric variables can now use Treatment contrasts, which compares each level to a user-selected control, or reference level.
  • Helmert contrasts are also available, which compares each level to the mean of the previous levels.
  • Ordinal contrasts no longer need to be numeric. If they are not numeric they are assumed to be evenly-spaced (e.g. “Low”, “Medium”, “High”).
  • The choice of contrast types for categoric factors is shown in the ANOVA.

Combined Models

  • Kowalski-Cornell-Vining (KCV) models are available as a Model Order choice.
  • KCV models provide a more efficient alternative to a full crossed model when building.
  • KCV models can be selected during the analysis as well.

Legacy features:

Design-Expert v9
Design-Expert v8
Design-Expert v7





Design-Expert 12 (Single User or Network Client)
Component Minimum
Processor 1 GHz
Hard Drive 250 MB free space
Display 1024×768
Operating System
  • Windows 8/8.1
  • Windows 10


Server for Network Version (License Manager)
Component Minimum
Hard Drive 100 MB free space
Operating System

  • Windows Server 2008-2016
  • Linux x86 (64 or 32-bit)

Network version requires installation of the Reprise License Manager (RLM) as a service.

May be installed on a virtual server that is assigned a static ethernet MAC address.

Data and simulation files associated with the tutorials need to be downloaded separately.

There are a few DX8 tutorials noted below that will be replaced by DX9 versions as they become available.

Tutorials (DX & DE) Size Description
Adobe Acrobat Document General Multilevel-Categoric One-Factor 1.99 MB Build and analyze a one-factor factorial design, “Bowling”
Adobe Acrobat Document General Multilevel-Categoric Factorial 1.73 MB Build and analyze a three-level design with factorial analysis, “Battery” [Battery.simx]
Adobe Acrobat Document Two-Level Factorial 2.64 MB Two-level factorial design, “Filtrate” [Filtrate.simx]
Adobe Acrobat Document Foldover Designs 1.24 MB Augment a factorial design by foldover (DX8 tutorial) [Biker.dxp]
Adobe Acrobat Document Taguchi Designs 641.36 KB Taguchi designs (DX8 tutorial) [Taguchi-L16.dxp]
Adobe Acrobat Document Split-Plot General Multilevel-Categoric Factorial 1.03 MB Build and analyze a split-plot factorial design, “Pulp” [Pulp.simx]
Tutorials (DX Only) Size Description
Adobe Acrobat Document One Factor RSM 1.86 MB Build and analyze a one-factor RSM design, “Driving”
Adobe Acrobat Document Multi-Factor RSM 3.46 MB Multifactor response surface, “RSM” [RSM.dxpx & RSM-a.dxpx]
Adobe Acrobat Document Optimal Numeric 1.05 MB Adding multifactor constraints to an optimal design
Adobe Acrobat Document Mixture Designs 2.64 MB Build and analyze a simplex-lattice design, “Mix” [Mix.dxpx & Mix-a.dxpx]
Adobe Acrobat Document Combined Mixture-Process 1.65 MB Build and analyze a mixture design with process factors, “Fish Patties” [Fish Patties.simx]
Adobe Acrobat Document Optimal Categoric 1.28 MB Adding categoric factors to an optimal design (DX8 tutorial) [Peel.dxp]
Adobe Acrobat Document Historical RSM 824.21 KB Analysis of highly correlated data, “Longley” (DX8 tutorial) [Longley.dxp]
Feature Tour Size Description
Adobe Acrobat Document Simple Sample 416.36 KB How to use simple sample designs [Simple Sample-Motor Shaft.dxpx]
Adobe Acrobat Document Split-Plot Factorial 698.29 KB How to build a factorial split-plot [PCR with data.dxpx & PCR.simx]
Adobe Acrobat Document Split-Plot Optimal 298.23 KB How to build an optimal split-plot [PCR as Optimal Build (starter).dxpx]
Adobe Acrobat Document Verification Runs 455.64 KB How to use verification runs [RSM-a.dxpx] (DX9 Only)
Adobe Acrobat Document Confirmation Runs 323.3 KB How to enter confirmation runs [RSM-a.dxpx] (DX9 Only)
Documents Size Description
Adobe Acrobat Document What’s new in version 9? 1.82 MB Illustrated highlights of new features in Design-Expert 9
Adobe Acrobat Document New Factorial Design Builder 370.85 KB DX9 factorial design builder: screenshots and comparison to DX8
Windows Installer Design-Expert 9 Tutorials 24.28 MB Installs all Design-Expert tutorials and data files.
Windows Installer Design-Ease 9 Tutorials 10.81 MB Installs all Design-Ease tutorials and data files.


Tutorial Name
Help Video tutorial help and navigation tips
Factorial Design
1 Building a 2-level factorial and sorting data
2 Analyzing the data in a 2-level factorial
3 Exploring the model graphs
4 Finding the optimum settings and confirming the model
 Mixture Design
1 Building and Analyzing an Optimal Mixture Design
Try the free 30-days trial!



Design-Expert 12 Installer. Size: (29.29 MB)


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Design-Expert® (and Design-Ease®) software is published by Stat-Ease, Inc., Minneapolis, MN USA (