A time series approach to quality control

Date
1991
Journal Title
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Volume Title
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Abstract

One way that a process may be said to be "out-of-control" is when a cyclical pattern exists in the observations over time. It is necessary that an accurate control chart be developed to signal when a cycle is present in the process. Two control charts have recently been developed to deal with this problem. One, based on the periodogram, provides a test based on a finite number of frequencies. The other method uses a test which estimates a statistic which covers all frequency values. However, both methods fail to estimate the frequency value of the cycle and are computationally difficult. A new control chart is proposed which not only covers a continuous range of frequency values, but also estimates the frequency of the cycle. It in addition is easier to understand and compute than the two other methods.

Description
Degree
Master of Arts
Type
Thesis
Keywords
Statistics
Citation

Dittrich, Gayle Lynn. "A time series approach to quality control." (1991) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13492.

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