Smiley W. Cheng This email address is being protected from spambots. You need JavaScript enabled to view it.1 and Hansheng Xie1 1Department of Statistics, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
Received:
March 1, 2000
Accepted:
September 1, 2000
Publication Date:
September 1, 2000
Download Citation:
||https://doi.org/10.6180/jase.2000.3.3.02
In dealing with positively-skewed distributed data, the direct logarithmic transformation may result in a control chart with inappropriate control parameters in the application of quality control. When a specific interval for the lognormal mean is given, a new method is introduced to set up two control charts and these two charts can monitor a process for which the underlying distribution of the quality characteristic is lognormal.ABSTRACT
Keywords:
lognormal distribution, control chart, quality control, mean, variance, normal distribution
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