DesignExpert¢ç Software Version 10
StatEase, Inc. welcomes you to version 10 of DesignExpert software (DX10) for design of experiments (DOE). Use this Windows¢çbased program to optimize your product or process. It provides many powerful statistical tools, such as:
• Twolevel factorial screening designs: Identify the vital factors that affect your process or product so you can make breakthrough improvements.
• General factorial studies: Discover the best combination of categorical factors, such as source versus type of raw material supply.
• Response surface methods (RSM): Find the optimal process settings to achieve peak performance.
• Mixture design techniques: Discover the ideal recipe for your product formulation.
• Combinations of process factors, mixture components, and categorical factors: Mix your cake (with different ingredients) and bake it too!
Your DesignExpert program offers rotatable 3D plots to easily view response surfaces from all angles. Use your mouse to set flags and explore the contours on interactive 2D graphs. Our numerical optimization function finds maximum desirability for dozens of responses simultaneously!
You'll find a wealth of statistical details within the program itself via various Help screens. Take advantage of this information gold mine that is literally at your fingertips. Also, do not overlook the helpful annotations provided on all reports.
For a helpful collection of checklists and "cheat sheets," see the Handbook for Experimenters. It's free to all registered users. Furthermore, for quick primers on the principles of design and analysis, we recommend you read the following two softcover books from StatEase Principals Mark Anderson and Pat Whitcomb, published by Productivity Press of New York city:
• DOE Simplified: Practical Tools for Effective Experimentation,3rd Edition
• RSM Simplified: Optimizing Processes Using Response Surface Methods for Design of Experiments.
Anderson and Whitcomb have also written a Primer on Mixture Design. It's posted free for all to read via the "I'm a Formulator" link on the StatEase home page.
What's New
Those of you who¡¯ve used previous versions of DesignExpert software will be impressed with the many improvements in Version 10. Do not hold off: Upgrade now!
Here are the highlights:
Graphs greatly upgraded to more quickly get you the picture of your experimental outcome
• Multiple Graphs view (factor profiler): Seeing effects from input variables side by side shouts out their relative impacts.
• All Reponses choice in Numerical Optimization: Compare side by side the overall desirability with the individual optimum results so you get the complete view from the peakof performance.
User interface far more engaging
• Design Wizard provides guidance for less sophisticated users: If you are not sure where to start with your experiment, follow through with this short series of questions to get an answer.
• Expanded Undo/Redo option in Design Layout with new viewer toolbox: Oops, you typed in the wrong number, but now that is no problem: get a doover by pressing the undo button.
Computational capabilities greatly improved
• 64bit version now available: Take full advantage of the technology built into your CPU for faster performance for statistical calculations, rendering of graphics and so forth.
• Math engine retooled for farfaster computations: Why wait?
• Optimal builds now run in parallel making them 3 to 17 times faster: Smart!
• Designs no longer limited to 32K runs: This frees up very large experiments done via computer
simulations or with robotic apparatus.
Many designs added and made more versatile
• Optimal split plots for Response Surface and Combined (mixtureprocess) designs: Make it far easier as a practical matter to experiment when some factors cannot be easily randomized, e.g., first mix your cakes by batches (hard) and then bake them at varying temperatures (hard) for differing times (easy).
• Blocking for Definitive Screening Designs (DSDs): DSDs offer a fast track to optimization (thus in v10 they are provided on the Response Surface tab)—these newlyinvented designs are now even better with the option to break them up into blocks.
• Restricted Randomization Central Composite Designs (CCD): Convert this tried and true response surface method (RSM) design into a split plot so it can deal with hardtochange factors.
• Historical data choice for Combined designs: Take advantage of all the tools in DesignExpert— evaluation, model fitting, statistics, diagnostics, graphing and numerical optimization—to see if a sweet spot can be found in your collection of happenstance data, even if it includes both process factors and mixture components.
• Power and sample size calculator for binomial responses during build: Design an experiment with sufficient runs to be fairly certain that you will not overlook an important discovery.
Modeling tools supercharged
• Definitive Screening Designs (DSD) moved to the Response Surface tab where it can be analyzed as a supersaturated matrix for quadratic modeling: DSDs provide a potential shortcut from screening through optimization, so this is a good place to put them—paving the way to apply DesignExpert¡¯s powerful tools for regression modeling.
• AICc, BIC and Adjusted Rsquared criteria in algorithmic selection: Take advantage of refinements developed by statisticians to produce a better predictive model.
• Automatic Model Selection tool for choosing Criterion and Selection method: Let DesignExpert work out what approach will be best depending on type of experiment you conducted.
Last, But Not Least—Many More Features in DesignExpert v10!
Graphs
• Interactive LSD (least significant difference) bars
• Improved flexibility in sizing and placement of flags on graphs
• Show ignored values on Predicted vs Actual graphs
• Ability to turn off the factor names on plots
• Select a point after adding a comment on a graph
Interface
• Smoother scrolling of reports and spreadsheets
• Enhanced copypaste for equations
• mproved export to Excel, Word and Powerpoint
• Support for different decimal point characters (localization)
• LOESS Tool for Fit line in Graph Columns
• Improved Graph Columns correlation grid tool with more intuitive layout
• Enhanced constraint tool with simplified result equations and a clear button
• Remember and restore position in design layout when returning to view
• Insert runs both before and after the selected run
• Doubleclick to resize reports
• Splash screen upon start (replaces About Box)
• Watermark added to example pictures on the transformation screen
• Better handling of progress bars including threading
Designs
• New expanded and redesigned Evaluation Report for splitplot designs
• Run column ¡°Reorder as currently displayed¡± option for splitplot designs
• Column sort from View menu for Design Layout
• Variance ratio displayed on the power responseentry screen for splitplots
Modeling
• Select by Degree option prioritizes the criteria comparisons by term order
• Model Selection Log in Automatic Model Selection and in ANOVA
• Likelihood ratio pvalues for splitplot designs
• Forward selection for REML/ML analysis
• Aliases reported and selectable in Effects List (makes Alias List unnecessary)
• Curvature term removed for DSDs (or other SDs that model squared terms)
Analysis
• Option to ignore groups for splitplot designs
• Equations section on the splitplot ANOVA
• Splitplot designs analyzed using either Maximum Likelihood (ML) or REML
• Tolerance Intervals for predictions in splitplot designs
• VIFs in splitplot ANOVA
• Adjustable REML/ML stopping rule and maximum iterations
• Negative variances excluded when calculating REML/ML
• Variance components in mixedmodels zeroed out below a threshold
• Improved computation of R2 in splitplot designs
• Block variance no longer included when calculating LSD values
• Option to choose between onesided and twosided tests for intervals
• New toolbox to view the Vmatrix used in Mixed Model calculations
Diagnostics
• BoxCox plot for mixed models, e.g., split plots
• Externally studentized residuals and influence graphs for mixed models (Cook's Distance, DFFITS, • Covariance Trace and Covariance Ratio)
• Limit lines on diagnostic graphs labeled
• Footnote to Diagnostics report indicates why deletion statistics not displayed
• Color by Group in the Residual vs Factor diagnostic graph
• Control limit defaults values for DFFITs and DFBETAs with option not to display on graph
• Better footnoting in Diagnostics Report
System Requirements
Processor : 1 GHz
Hard Drive : 250 MB free space
RAM : 2 GB
Display : 800x600
Operating System : Windows Vista SP2, Windows 7 SP1, Windows 8, 8.1, Windows 10
