Specifies procedures for the statistical control of processes by using control charts based on calculating the arithmetic average of a sample and using warning limits and action limits. It is assumed that for large lots and for the mass output of piece and batch production, such a measure of quality is a random variable following a normal distribution. However, when averages of four or more items are plotted, this assumption of a normal distribution is not necessary for control purposes.
Status : WithdrawnPublication date : 1993-12
Edition : 1Number of pages : 13
Technical Committee:Applications of statistical methods in product and process management