All orthogonal arrays with 18 runs

All combinatorially inequivalent orthogonal arrays with 18 runs and eight or less factors are generated. Their potential as practical experimental designs is evaluated by a classification using generalized word-length patterns of the original arrays and those of their projections into less factors. Arrays of special interest are given explicitly. This paper includes the statistical analysis of results from a real-life experiment based on one of the arrays. © 2008 John Wiley & Sons, Ltd.

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