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A group sequential test for the inverse Gaussian mean 总被引:1,自引:1,他引:0
The present paper deals with the development of a group sequential test when response variable has an inverse Gaussian distribution with known scale parameter. 相似文献
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Power comparison of the Kolmogorov–Smirnov test under ranked set sampling and simple random sampling
Yusuf Can Sevil 《Journal of Statistical Computation and Simulation》2017,87(11):2175-2185
Many studies have been used to compare the power of several goodness-of-fit (GOF) tests under simple random sampling (SRS) and ranked set sampling (RSS). In our study, a different design procedure and ranking process in RSS are thoroughly investigated. A simulation study is conducted to compare the power of the Kolmogorov–Smirnov test under SRS and RSS with different sets and cycle sizes for several distributions. Level-2 sampling design and partially rank-ordered sets are used. Also, we benefited from auxiliary variables in the ranking process. Finally, results are presented with tables and figures. Under these conditions we show that the RSS has better performance against the SRS in finite population. 相似文献
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Tugba Ozkal Yildiz Yusuf Can Sevil 《Journal of Statistical Computation and Simulation》2018,88(9):1702-1716
In this study, we consider different sampling designs of ranked set sampling (RSS) and give empirical distribution function (EDF) estimators for each sampling designs. We provide comparative graphs for the EDFs. Using these EDFs, power of five goodness-of-fit tests are obtained by Monte Carlo simulations for Tukey's g–h distributions under RSS and simple random sampling (SRS). Performances of these tests are compared with the tests based on the SRS. Also, critical values belong to these tests are obtained for different set and cycle sizes. 相似文献
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Sevil Sümer Janet Smithson Maria das Dores Guerreiro Lise Granlund 《Community, Work & Family》2008,11(4):365-384
This paper investigates how differences in national and organisational welfare policies and in cultural norms on national, organisational, and familial levels influence work–family reconciliation for mothers. Drawing on case study and interview data gathered through a large European study of parenthood and organisations, we compare experiences of transition to motherhood in three organisations in Norway, the UK, and Portugal. The specific question which is considered in this paper is how mothers manage the reconciliation of work and family in the period of time following parental leave. Our case analyses highlight the differences in organisational, national policy, and family support in the three contexts, and show that having a child is still conceptualised as a predominantly ‘private problem’ in the UK and Portugal, while it has come closer to having the status of a ‘public issue’ in Norway. 相似文献
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