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Autoren: 
Riaz, Muhammad
Muhammad, Faqir
Datum: 
2012
Quellenangabe: 
[Journal:] Journal of Statistical and Econometric Methods [ISSN:] 2241-0376 [Publisher:] International Scientific Press [Volume:] 1 [Year:] 2012 [Issue:] 1 [Pages:] 77-92
Zusammenfassung: 
The range control chart and the X bar control chart are the well known and the most popular tools for detecting out- of-control signals in the Statistical Quality Control (SQC). The control charts has shown his worth in the manufacturing industry. In this study we have applied the range and the X bar control charts to a product of Swat Pharmaceutical Company. The variables under study were weight/ml, Ph, Citrate % and the amount of fill. Besides the X bar control chart, the exponentially weighted moving average control chart and the multivariate Hotelling's T2 control chart were applied to the same data.
Schlagwörter: 
descriptive statistics
data smoothing
estimation and detection mean
Dokumentart: 
Article
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