A work sample was used as part of a human factors investigation into the reliability of a safety‐critical programming task. The use of this technique provided important insight into three areas. First, a number of different metrics, based on error rates, were considered for the purpose of...

Selects one of Hamaker′s procedures for deriving a “σ” method (i.e. known process standard deviation) double sampling plan and exploits some of its properties to develop a system of “ s ” method (i.e. unknown process standard deviation) double sampling plans by variables that match...