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A new procedure for monitoring the range and standard deviation of a quality characteristic
Kiani, M.; Panaretos, J.; Psarakis, S. - In: Quality & Quantity: International Journal of Methodology 44 (2010) 1, pp. 1-24
Persistent link: https://www.econbiz.de/10009396301
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A new procedure for monitoring the range and standard deviation of a quality characteristic
Kiani, Mehdi; Panaretos, John; Psarakis, Stelios - Volkswirtschaftliche Fakultät, … - 2008
The Shewhart and the Bonferroni-adjustment R and S chart are usually applied to monitor the range and the standard … estimator used in the Shewhart and Bonferroni approach. The proposed approaches in the case of the unknown standard deviation …, give out-of-control average run length slightly less than the Shewhart approach and considerably less than the Bonferroni …
Persistent link: https://www.econbiz.de/10005789614
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Evaluations of likelihood based surveillance of volatility
Bock, David - Statistical Research Unit, Department of Economics, … - 2007
weighted. The full likelihood ratio, Shiryaev-Roberts, Shewhart and the CUSUM methods are derived in case of an independent and …
Persistent link: https://www.econbiz.de/10005190484
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Evaluation of multivariate surveillance
Frisén, Marianne; Andersson, Eva; Schiöler, Linus - Statistical Research Unit, Department of Economics, … - 2009
multivariate counterparts to the univariate Shewhart, EWMA, and CUSUM methods. Our emphasis is on the special challenges of …
Persistent link: https://www.econbiz.de/10004999557
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Run length quantiles of EWMA control charts monitoring normal mean or/and variance
Knoth, Sven - In: International journal of production research 53 (2015) 15, pp. 4629-4647
Persistent link: https://www.econbiz.de/10011344703
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Properties and performance of the c-chart for attributes data
Chakraborti, S.; Human, S. W. - In: Journal of Applied Statistics 35 (2008) 1, pp. 89-100
The effects of parameter estimation are examined for the well-known c-chart for attributes data. The exact run length distribution is obtained for Phase II applications, when the true average number of non-conformities, c, is unknown, by conditioning on the observed number of non-conformities in...
Persistent link: https://www.econbiz.de/10005458246
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Control Charts for the Lognormal Distribution
Maravelakis, Petros; Panaretos, John; Psarakis, Stelios - Volkswirtschaftliche Fakultät, … - 1999
particular, we present the Shewhart Control Charts developed up to now, under such distributional assumptions and a new Control …
Persistent link: https://www.econbiz.de/10005621246
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Evaluation theories of the income dynamics: A probabilistic approach
Aebi, Robert; Neusser, Klaus; Steiner, Peter - 1999
The paper proposes an approach to evaluate hypotheses about transition dynamics when only the distributions at two points in time are observed. Using the principle of statistical mechanics, we show how to adjust in the most probable way a hypothesis so that it becomes compatible with the...
Persistent link: https://www.econbiz.de/10010291915
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Team heterogeneity in startups and its development over time
Kaiser, Ulrich; Müller, Bettina - 2013
We investigate the workforce heterogeneity of startups with respect to education, age and wages. Our explorative study uses data on the population of 1,614 Danish firms founded in 1998. We track these firms until 2001 which enables us to analyze changes in workforce composition over time. Such a...
Persistent link: https://www.econbiz.de/10010293184
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Gravity approach for exploring Baltic Sea regional integration in the field of international trade
Paas, Tiiu - 2002
The paper is inviting a reader to think to what extent we can use the knowledge resulting from laws of nature for exploring economic processes. In order to look for the answers on this question, the paper is going to explore international trade flows between the Baltic Sea region countries using...
Persistent link: https://www.econbiz.de/10010295503