A computer program is described for the experimental set-up and interpretat
ion of ruggedness tests. The implemented strategy was based on a number of
case studies and contains both recommended designs and minimal designs. The
minimal designs reduce the number of experiments, but they cannot be stati
stically interpreted based on the interaction or dummy factor effects. The
use of randomization tests as an alternative statistical interpretation met
hod for the significance of the effects was examined. Some of the minimal d
esigns are expandable to designs with characteristics similar to those of t
he recommended designs. The program is designed to facilitate the selection
of the designs and the interpretation of the results and to prevent or det
ect problems such as drifting of responses. (C) 1998 Elsevier Science B.V.
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