Step-wise screening of defective factors

Abstract

It is generally assumed that the defective factors of a population have the same a-priori probability" of being defective'. However, with some knowledge of the population, we can relax on this assumption and assume the population may consist of factors with unequal a-priori probabilities of being defective. Stepwise screening is dev~loped to detect these factors with mini-. mum expected number of runs assuming that there are no errors in. the observations. Co-mparison is done with an·equivalent·two- ;. stage group screening experiment.