Design of Experiments

Lecture Slides

Downloads

Experiment planning form

2² template (EXCEL)

2³ template (EXCEL)

2² analysis sheet

Six Sigma DMAIC 

Technical Note

ANOVA concepts (optional)

One Factor Experiments (optional)

Related Sites

CPQI

Key Points / Outline

There are two types of studies: analytic and enumerative. A single factor enumerative study might consist of examining cross-sectional data for differences using confidence intervals or hypothesis testing. 

A single factor analytic study might consist of an experiment in which we look at varying levels of a single factor.  We will concentrate on experiments in which we are examining factors only at two levels called 2^k experiments. Experimentation gained some notoriety when Genichi Taguchi introduced orthogonal arrays, but most recently in the press the area of design of experiments has been called multivariable testing.

• 2^2 Experiment Analysis

• 2^2 Experiment Design

• 2^3 Experiments

Digging Deeper

"Robust Quality" by Genichi Taguchi and Don Clausing, Harvard Business Review, January-February 1990, pp. 65-75.

"Boost Your Marketing ROI with Experimental Design" by Eric Almquist and Gordon Wyner, Harvard Business Review, October 2001, pp. 135-141.

"The Scientific Context of Quality Improvement" by George E. P. Box and Soren Bisgaard, Quality Progress, June 1987, pp. 54-61.

"Enlightened Experimentation" by Stefan Thomke, Harvard Business Review, February 2001, pp. 65-75.

"A Systematic Approach to Planning a Designed Industrial Experiment," David E. Coleman and Douglas C. Montgomery, Technometrics 1993, as reprinted in IEEE Engineering Management Review, volume 24, number 1, Spring 1996, pp. 75-86.

"Decoding the DNA of the Toyota Production System" by Stephen Spear and Kent Bowen, Harvard Business Review, September-October 1999, pp. 95-106.

Deaconess-Glover Hospital, HBS 9-601-022.

In the News

"The New Mantra: MVT," Rita Koselka, Forbes, March 11, 1996, pp. 114-118.

Article Links

Mach 3: Anatomy of Gillette's latest Global Launch  by Glenn Rifkin, Strategy & Business, 2nd Quarter 1999,  pp. 1-8.

Sixteen Steps to Improvement by Ranjit K. Roy, Quality Digest, June 2001.