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Control charts for skewed distributions : Weibull, gamma, and lognormal
ID
Karagöz, Derya
(
Author
),
ID
Hamurkaroğlu, Canan
(
Author
)
URL - Presentation file, Visit
http://www.stat-d.si/mz/mz9.1/karagoz.pdf
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Abstract
In this paper the control limits of X and R control charts for skewed distributions are obtained by considering the classic, the weighted variance (WV), the weighted standard deviations (WSD) and the skewness correction (SC) methods. These methods are compared by using Monte Carlo simulation. Type I risk probabilities of these control charts are compared with respect to different subgroup sizes for skewed distributions which are Weibull, gamma and lognormal. Simulation results show that Type I risk of SC method is less than that of other methods. When the distribution is approximately symmetric, then the type I risks of Shewhart, WV , WSD, and SC X charts are comparable, while the SC R chart has a noticeable smaller Type I risk.
Language:
English
Keywords:
statistični nadzor
Work type:
Not categorized
Typology:
1.01 - Original Scientific Article
Organization:
FDV - Faculty of Social Sciences
Year:
2012
Number of pages:
Str. 95-106
Numbering:
Vol. 9, no. 2
PID:
20.500.12556/RUL-45445
UDC:
311.1
ISSN on article:
1854-0023
COBISS.SI-ID:
31771229
Publication date in RUL:
10.07.2015
Views:
1004
Downloads:
81
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Title:
Metodološki zvezki
Shortened title:
Metodol. zv.
Publisher:
Fakulteta za družbene vede
ISSN:
1854-0023
COBISS.SI-ID:
215795712
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