Quality Assurance of Automated Data Processing Systems (ADPS): Part I. Development of Specification Requirements

Article

Coutinho, John De S.   (1972, ASQC)   Grumman Aerospace Corporation, Bethpage, NY

Journal of Quality Technology    Vol. 4    No. 2
QICID: 5111    April 1972    pp. 86-92
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Article Abstract

Although the Poisson distribution is probably the most common distribution associated with count (or defects per item) data, it is by no means the only one. This article will present some situations which would lead to other distributions, in particular situations where: (1) defects occur in clusters; (2) defects are the result of two underlying causes; and where (3) probability of no defects is not related to the distribution of counts or the occurrence of no defects cannot be recorded.

Keywords

Software quality,Data collection,Poisson distribution


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