Here's another set of frequently asked questions (FAQs) about doing design of experiments (DOE), plus alerts to timely information and free software updates. If you missed the previous DOE FAQ Alert, please click on the links at the bottom of this page. If you have a question that needs answering, click the Search tab and enter the key words. This finds not only answers from previous Alerts, but also other documents posted to the Stat-Ease web site.
Feel free to forward this newsletter to your colleagues. They can subscribe by going to http://www.statease.com/doealertreg.html. If this newsletter prompts you to ask your own questions about DOE, please address them via mail to:StatHelp@StatEase.com.
Here's an appetizer to get this Alert off to a good startan unearthly photograph of a sunset over the Gusev Crater on Mars: http://makeashorterlink.com/?Q1AE21A4B. It was captured by the rover Spirit under direction from NASA and the Jet Propulsion Laboratory (JPL) at Cal Tech. I received this fabulous photo automatically via the "Astronomy Picture of the Day" (APOD) screen saver at http://nightskylive.net/software/apod/, which links to the source: http://antwrp.gsfc.nasa.gov/apod/.
July 5th's APOD was a photograph taken by Deep Impact's mother ship of the previous day's crash into comet Tempel 1 by its martyrous offspring. For this picture and many others of this celestial fireworks display coinciding with our Independence Day holiday here in the United States of America, see http://deepimpact.jpl.nasa.gov/home/index.html.
The news media are trying to work up concern about debris from the comet harming people on Earth. Last week's premiere of Spielberg's latest movie "War of the Worlds" (WoW) may be making Americans jittery about objects from outer space. Sitting only four rows from my local theatre's "UltraScreen," I was blown away by this film (or was it the incredible bass vibrations from the massive theatrical sub-woofer?). For movie trailers, check out the awesome WoW web-site at http://www.waroftheworlds.com/.
Here's what I cover in the body text of this DOE FAQ Alert (topics that delve into statistical detail are designated "Expert"):
1. Newsletter alert:
The July issue of the Stat-Teaser features strip-block design
that saved millions of defective batteries
Many of you will soon receive a printed copy of the latest Stat-Teaser, but others, by choice or because you reside outside of North America, will get your only view of the July issue at http://www.statease.com/news/news0507.pdf.
The feature article, "Strip Block Design Gives Battery Experiment a Charge," shows how, with the use of Design-Expert® software, I reproduced an innovative quality improvement study masterminded by a pair of Brazilian statisticians.
The other article announces a new, one-day "crash course" on DOE for sales and marketing. It will be presented at the Stat-Ease training center in Minneapolis by Dr. Paul Selden on September 29. See http://www.statease.com/clas_smdoe.html for information on this class, background on the instructor, a syllabus and links to sign up online.
2. Help wanted: Stat-Ease seeks an enthusiastic DOE professional
We at Stat-Ease, Inc, a Minneapolis-based statistical software company, offer an opportunity for an energetic person to join our team. The full-time job opening encompasses a combination of teaching and technical development.
Job responsibilities include:
for this DOE professional are:
We desire experience in:
E-mail resumes to Shari Kraber at Shari@Statease.com by August 10th to be considered for this position as a DOE professional.
"Semiconductor Manufacturing" magazine's May issue features Carlton Washburn's article, "Reducing 300mm Wafer Coating Defects without Compromising Uniformity." For the original manuscript, see http://www.statease.com/pubs/washburndoe.pdf.
The June/July issue of OE Magazine (optical engineering) includes a column by me titled "Trimming the Fat." My submission is posted at http://www.statease.com/pubs/doeprimer.pdf. It provides a brief introduction to design of experiments in contrast with the traditional one-factor-at-a-time (OFAT) approach. I hope you find this useful as a quick primer for those who have never heard of DOE.
4. Events alert: Link to schedule of appearances by Stat-Ease
Click on http://www.statease.com/events.html for a list of appearances by Stat-Ease professionals. We hope to see you sometime in the near future!
5. Workshop alert: See when and where to learn about DOE
See http://www.statease.com/clas_pub.html for schedule and site information on all Stat-Ease workshops open to the public. To enroll, click the "register online" link on our web site or call Stat-Ease at 1.612.378.9449. If spots remain available, bring along several colleagues and take advantage of quantity discounts in tuition, or consider bringing in an expert from Stat-Ease to teach a private class at your site. Call us to get a quote.
I hope you learned something from this issue. Address your general questions and comments to me at: Mark@StatEase.com.
Mark J. Anderson, PE, CQE
PS. Quote for the month: Why statistics makes it hard for anyone to tell time:
"A person with one watch knows
the time. The owner of two can never be certain."
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