p‐Charts for Attribute Control
Abstract
In this article, we present charts for attribute control by means of the proportion ( ) of defective items, named ‐charts. Such charts are often used in statistical quality control to monitor the behavior of production processes by means of over time. When the sample size ( ) is constant, charts for attribute control related to the number ( ) of defective items, named ‐charts, are a good alternative to the ‐charts. A review of the basic issues related to ‐charts and some recent ideas on the topic are provided considering life distributions. An implementation in the R software is discussed using examples.



