Use of independent runs for the improvement of the response of Shewhart control charts

Alberto Iacobini
The paper deals with an extension of standard Shewhart control charts witch provide independent runs of given length, or IR-charts, with the purpose of improving the performance of the former by allowing a faster detection of small and medium shifts in a process mean. The author purposely chooses to remain in the field of indipendent sample observations, which are much more frequently used in SPC compared to other types of charts due to their simplicity,...