نتایج جستجو برای: percentile estimator

تعداد نتایج: 42349  

Journal: :Transportation Research Record: Journal of the Transportation Research Board 2014

Journal: :Journal of the American Society for Information Science and Technology 2012

ژورنال: اندیشه آماری 2011
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In this paper the exact determination of the distribution of stopping variable, the moment and risk of sequential estimator of the failure rate of exponential distribution, under convex boundary is obtained. The corresponding Poisson Process is used to derive the exact distribution of stopping variable of sequential estimator of the failure rate. In the end the exact values of mean and risk ...

Bahmani, P. , Fatemi Ghomi, S.M.T., Nikoukar Zanjani, M. ,

Several sampling distribution properties of the estimator for Cpk are presented under the assumption that the data are normal, independent and identically distributed. In this paper using these assumptions, the expectation, variance and skewness are calculated by statistical methods, since the sampling distribution is weakly skewed, it is concluded that a symmetric interval estimator for Cpk mi...

Journal: :international journal of industrial mathematics 0
m. rajaei ‎salmasi‎ department of statistics, science and research branch, islamic azad university, tehran, ‎iran‎. g. yari department of mathematics, iran university of science and technology, tehran, ‎iran.‎

‎the aim of this paper is to study distribution of ratios of generalized order statistics from pareto distribution. parameter estimation of pareto distribution based on generalized order statistics and ratios of them have been obtained. inferences using method of moments and unbiased estimator have been obtained to develop point estimations. consistency of unbiased estimator has been illustrate...

Journal: :فیزیک زمین و فضا 0
عادل مجیدی گروه زمین شناسی، دانشکده علوم، دانشگاه ارومیه حمیدرضا سیاه کوهی گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران رامین نیکروز گروه زمین شناسی، دانشکده علوم، دانشگاه ارومیه

the purpose of velocity analysis is to extract the normal moveout velocity as a function of the zero-offset travel time at selected cdp locations along the seismic line. since results of velocity analysis depend on coherency estimator, an estimator that provides a high velocity resolution is essential. even though the conventional semblance method which is the most popular coherency estimator (...

Shannon entropy is increasingly used in many applications. In this article, an estimator of the entropy of a continuous random variable is proposed. Consistency and scale invariance of variance and mean squared error of the proposed estimator is proved and then comparisons are made with Vasicek's (1976), van Es (1992), Ebrahimi et al. (1994) and Correa (1995) entropy estimators. A simulation st...

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