The case against generally weighted moving average (GWMA) control charts
نویسندگان
چکیده
We argue against the use of generally weighted moving average (GWMA) control charts. Our primary reasons are following: (1) There is no recursive formula for GWMA chart statistic, so all previous data must be stored and used in calculation each statistic. (2) The Markovian property does not apply to statistics, computer simulation determine limits statistical performance. (3) An appropriately designed, much simpler, exponentially (EWMA) provides as good or better (4) In some cases gives more weight past values than current values.
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ژورنال
عنوان ژورنال: Quality Engineering
سال: 2021
ISSN: ['0898-2112', '1532-4222']
DOI: https://doi.org/10.1080/08982112.2021.2002359