Stat-Ease Blog

  • Choosing the Best Design for Process Optimization

    Ever wonder what the difference is between the various response surface method (RSM) optimization design options? To help you choose the best design for your experiment, I’ve put together a list of things you should know about each of the three primary response surface designs—Central Composite, Box-Behnken, and Optimal.

    Central Composite Design (CCD)

  • Tips and Tricks for Navigating Design-Expert® Software

    We’ve designed Design-Expert® software to be flexible and user-friendly. For those of you who haven’t had a chance to fully explore its capabilities, here are some tips to help you navigate the software and find options that are useful for you:

    • The all-new Design Wizard asks you a series of questions, and then directs you to a starting design! You may want to modify things from here, but it’s a great starting Continue reading
  • The Importance of Center Points in Central Composite Designs

    A central composite design (CCD) is a type of response surface design that will give you very good predictions in the middle of the design space.  Many people ask how many center points (CPs) they need to put into a CCD. The number of CPs chosen (typically 5 or 6) influences how the design functions.

    Two things need to be considered when choosing the number of CPs in a central composite design:
    Continue reading

  • Don’t Let R^2 Fool You

    By Pat Whitcomb

    Has a low R2 ever disappointed you during the analysis of your experimental results? Is this really the kiss of death? Is all lost? Let’s examine R2 as it relates to factorial design of experiments (DOE) and find out.

    R2 measures are calculated on the basis of the change in the response (Δy) relative to the total variation of the response (Δy + σ) Continue reading

  • State Fair Bread — through SCIENCE!

    Hello, Design-Expert® software users, Stat-Ease clients and statistics fans! I’m Rachel, the Client Specialist here at Stat-Ease. If you’ve ever called our general line, I’m probably the one who picked up; I’m the one who prints and binds your workshop materials when you take our courses. I am not, by any stretch of the imagination, a statistician. So why am I, a basic office administrator who hasn’t taken a math class since high school, writing a blog post for Stat-Ease? Continue reading

  • The 6th European DOE User Meeting Recap

    Stat-Ease, Inc. and CQ Consultancy hosted the 6th European DOE User Meeting in Leuven, Belgium on May 18th-20th, 2016. We offered two design of experiments (DOE) workshops on the 18th, and then the two-day DOE User Meeting on the 19th-20th. The venue at the historic Faculty Club was charming--complete with cobblestone streets, flowers in full bloom, and delicious artistically-arranged cuisine. The technical program was also excellent. Continue reading

  • Sign Up Now for the 6th European DOE User Meeting

    Stat-Ease, Inc. and CQ Consultancy are pleased to announce the 6th European DOE User Meeting and Workshops on May 18-20, 2016 in Leuven, Belgium. It will be held at the Faculty Club, which is part of the historic Grand Béguinage. The béguinage originated in the early 13th century and is a UNESCO World Heritage location.

    On the first day of the event there will be two workshop tracks offered: Figuring Out Factorials and Continue reading

  • Limited Seats Left for the 2nd Asian DOE User Meeting and Workshop

    Limited seats are left for the 2nd Asian DOE User Meeting and Workshop in Udaipur, India this March 3-5. Don't miss this opportunity to meet Pat Whitcomb, Founder of Stat-Ease, and be introduced to newly released Design-Expert® software, version 10! Increase your DOE skills, learn from others' successes and challenges, and network in this beautiful area voted the best city in the world in 2009 by Travel + Leisure magazine. For more information and to register, click here.
    Continue reading

  • Announcing the Stat-Ease Academy for e-Learning

    Stat-Ease is pleased to announce the launch of the Stat-Ease Academy. Applying the same formula that makes our workshops so effective, we've developed a great new training option for you that's available on your schedule, wherever you are! Visit our web site to access e-learning content on a variety of topics—some free of charge, others available for a small fee.

    E-learning is the perfect choice Continue reading

  • CAMO Software and Stat-Ease, Inc. Release Strategic Software Platform

    CAMO Software, leaders in multivariate data analysis software, and Stat-Ease, Inc. have released a software bundle for multivariate data analysis and design of experiments. The software bundle combines CAMO’s leading software for multivariate data analysis, The Unscrambler® X, and Stat-Ease’s leading software for design of experiments, Design-Expert®.

    The Unscrambler X offers advanced Continue reading

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