Font Size: 

Statistical process control, or quality control, consists of wide range of methods based on monitoring the production process under study in order to detect any trend in the process. One can use the classical x-bar chart introduced by Shewhart in 1924, the R chart, or the CUSUM chart. We will give properties of these charts, their ARL (average run lenght) and OC (operating characteristic) curves, as well as Frechet chart, EWMA chart and some other. Time series analysis leads to another approach in quality control and one part of the talk will be devoted to these possibilities.