Role of Statistics in Quality Control

Abstract

The role of Statistics in Quality Systems depends on certain philosophical issues which the author believes have been inadequately addressed. Three such issues are the role of statistics in the process of discovery, the extrapolation of results from the particular to the general, and the management climate in which quality improvement needs to be conducted. Statistical methods appropriate to discovery are discussed as distinct from those appropriate only to the testing of an already discovered solution. The manner in which the tentative solution has been arrived at is shown to determine with what assurance the experimental conclusions can be extrapolated to the practical application in mind. Whether or not statistical methods and training can have any impact depends on the system of management. A vector representation of management strategies is discussed. This can help to realign policies so that members of an organization can work together for its benefit.