Implementing the Circle Technique Using Spreadsheets

Article

Cox, M.A.A.   (1996, Marcel Dekker, Inc. and ASQC)   School of Business Management, University of Newcastle upon Tyne, Newcastle upon Tyne, United Kingdom;

Quality Engineering    Vol. 9    No. 1
QICID: 15090    September 1996    pp. 65-76
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Article Abstract

[This abstract is based on the author's abstract.]

The useful circle technique, also called a process capability plot, for assessing the stability of the process mean and variability simultaneously is automated. The procedure works by plotting a series of sample mean and standard deviation pairs, then assessing if the process is in control by observing whether the points lie within a circular boundary. Since it is a graphical process, results may be interpreted readily by technicians with minimal training. SuperCalc and Lotus codes are used to implement the circle technique for spreadsheets.

Keywords

Process capability (Cp),Capability study,Software,Shewhart control chart,Process control


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