Title: One-Factor-at-a Time Versus Designed Experiments
Author: Veronica Czitrom
Publication Source: American Statistical Association, The American Statistician, May 1999, Vol. 53, No. 2, pp. 126-131
Abstract
[Based on the author's abstract.] Many engineers and scientists perform one-factor-at-a-time (OFAT) experiments. They will continue to do so until they understand the advantages of designed experiments over OFAT experiments, and until they learn to recognize OFAT experiments so they can avoid them.
A very effective way to illustrate the advantages of designed experiments, and to show ways in which OFAT experiments present themselves in real life, is to introduce real examples of OFAT experiments and then demonstrate why a designed experiment would have been better. Three engineering examples of OFAT experiments are presented, as well as designed experiments that would have been better.
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