The front page of the Wall Street Journal on March 13 highlighted an "$11 Trillion Hole" and said "Americans See 18% of Wealth Vanish." I looked at the chart, and the 2008 number indeed looked as if it had fallen off a cliff. But then I looked at the rest
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My previous blog post covered issues in the design of a choice experiment for laptop computers. The goal was to model the trade-offs among features and price. In this post, I'll show how to design a choice experiment. The Choice Design feature, which you access from the DOE menu in
Laptop vendors need to know which features are valued in a laptop and how much customers are willing to pay for them. Manufacturers could learn this through a market research technique know as a choice experiment. This post covers the elements of experimental design for choice experiments using JMP 8.
(NOTE: This is part three of three-part series on stochastic optimization.) Over the last two weeks, I introduced robust process engineering and stochastic optimization – the effort to achieve good product in the face of variation among the factors. Last week, I gave a cooking example. This week, I present
(NOTE: This is part two of a three-part series on stochastic optimization.) In my previous post, I introduced stochastic optimization. In this post, I show a real example. This example was reported in the classic text by George Box and Norman Draper: Empirical Model-Building and Response Surfaces (page 32), and
(NOTE: This is part one of a three-part series on stochastic optimization.) To get to the top of a hill, you just keep going up. However, hills can have subpeaks, so sometimes you have to hunt around to keep going up. But going up is still the basic idea. This
Brad Jones, JMP's Director of Statistical R&D, has been elected a Fellow of the American Statistical Association, the most prominent professional statistical society in the US. This honor recognizes "outstanding professional contributions to and leadership in the field of statistical science." Brad has a career-long passion for the field of
If physicists can have their superposition magic, then so can statisticians. Suppose that you have lots of points across three variables in three groups. You need to count the number of points in each group. But you don't know which group each point comes from. And, by the way, each
Russ Wolfinger, the leader of the JMP Genomics project and developer of SAS Proc Mixed, recently was informed that he will be honored this summer as a fellow of the American Statistical Association. One of my best perspectives on Russ Wolfinger's work came when I went to a seminar that
Last week's news had the story from NC State University that dinosaurs probably tasted like chicken, and this week's Discovery Planet episode brought us the vivid scenes of the living snottie cave ceilings of Cueva de Villa Luz, an acid fuming cavern in the Tabasco state of Mexico. So how