Accession Number:

ADP007209

Title:

Control Charts Under Linear Trend,

Descriptive Note:

Corporate Author:

NATIONAL UNIV OF SINGAPORE DEPT OF MATHEMATICS

Personal Author(s):

• Gan, F. F.

Report Date:

1992-01-01

Pagination or Media Count:

3.0

Abstract:

The performance of control charts is usually evaluated by assuming a step change in the process mean. However, it is more appropriate to evaluate the performance of control charts by assuming a drift in the mean for processes where a gradual drift models the shift in the mean more accurately. Three major methods for computing the average run length ARL of control charts assuming a step change in the mean are reviewed. Generalizations of these methods for computing the ARL of control charts assuming a drift in the mean are then examined. Average run length Cumulative sum Exponentially weighted moving average Integral equation Linear drift Markov chain Normal distribution Statistical process control.

Descriptors:

• *INTEGRAL EQUATIONS
• CHAINS
• CHARTS
• CONTROL
• DISTRIBUTION
• DRIFT
• EQUATIONS
• INTEGRALS
• LENGTH
• MEAN
• MODELS
• NORMAL DISTRIBUTION
• PROBABILITY

Subject Categories:

• Statistics and Probability

Distribution Statement:

APPROVED FOR PUBLIC RELEASE