Prior research is the key to fractional factorial design

Miryam Barad*, C. Bezalel, Jonathan R. Goldstein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Fractional factorial design can bring great benefits, but it must be used intelligently. There are four general steps in designing experiments, such as those for a special type of nickel-cadmium battery, in order to improve the design and capacity of the battery: the problem must be clearly defined and formulated; the factors to be investigated and their set of values (or levels) are selected; the number of observations required is decided; and the design of the experiment is chosen. The design should provide an easy way to measure the effect of changing each condition and separate it from the effects of changing the other conditions and from the experimental error. A symmetrical design in all factors is the most adequate.

Original languageEnglish
Pages (from-to)71-75
Number of pages5
JournalQuality Progress
Issue number3
StatePublished - Mar 1989


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