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An Efficient Estimation Procedure for the Population Mean under Non-Response 无响应条件下总体均值的一种有效估计方法
IF 1.9 Pub Date : 2020-03-12 DOI: 10.6092/ISSN.1973-2201/8054
Shashi Bhushan, A. Pandey
This paper introduces an efficient estimation procedure for the population mean in the presence of non-response. The proposed estimators of population mean provides an improvement over the corresponding conventional estimators proposed by Cochran (1977), Rao (1983, 1986) and Singh and Kumar (2008, 2010) under the deterministic non-response in terms of efficiency. A comparative study has been performed and it has been shown that the proposed estimators perform better in comparison to the conventional estimators. The theoretical findings are supported by an empirical study.
本文介绍了一种在无响应情况下对总体均值进行有效估计的方法。与Cochran(1977)、Rao(19831986)和Singh和Kumar(20082010)在确定性非响应下提出的相应传统估计相比,所提出的总体均值估计在效率方面提供了改进。进行了比较研究,结果表明,与传统估计量相比,所提出的估计量表现更好。这一理论发现得到了实证研究的支持。
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引用次数: 3
A New Lifetime Distribution with Decreasing and Upside-Down Bathtub-Shaped Hazard Rate Function 具有递减和倒置浴缸形危险率函数的新寿命分布
IF 1.9 Pub Date : 2020-03-12 DOI: 10.6092/ISSN.1973-2201/8442
S. Dey, M. Nassar, D. Kumar, A. Alzaatreh, Muhammad Mohsin Tahir
We introduce a new lifetime distribution, called the alpha-power transformed Lomax (APTL) distribution which generalizes the Lomax distribution to provide better fits than the Lomax distribution and some of its known generalizations. Various properties of the proposed distribution, including explicit expressions for the quantiles, mode, moments, conditional moments, mean residual lifetime, stochastic ordering, Bonferroni and Lorenz curve, stress-strength reliability and order statistics are derived. The new distribution can have a decreasing and upside-down bathtub failure rate function depending on its parameters. The maximum likelihood estimators of the three unknown parameters of APTL are obtained. A simulation study is carried out to examine the performances of the maximum likelihood estimates in terms of their mean squared error using simulated samples. Finally, the potentiality of the distribution is analyzed by means of two real data sets. For the real data sets, this distribution is found to be superior in its ability to sufficiently model both the data sets as compared to the Lomax (L) distribution, exponentiated-Lomax (EL) distribution, gamma-Lomax (GL) distribution, beta-Lomax (BL) distribution and Kumaraswamy-Lomax (KuL) distribution.
我们引入了一个新的生命周期分布,称为alpha-power transformed Lomax (APTL)分布,它对Lomax分布进行了一般化,提供了比Lomax分布及其一些已知的一般化更好的拟合。推导了该分布的各种性质,包括分位数、模态、矩、条件矩、平均剩余寿命、随机排序、Bonferroni和Lorenz曲线、应力-强度可靠度和阶统计量的显式表达式。该新分布随其参数的变化具有减小和倒立的浴盆故障率函数。得到了APTL三个未知参数的极大似然估计。利用模拟样本的均方误差对最大似然估计的性能进行了模拟研究。最后,利用两个实际数据集分析了该分布的潜在性。对于实际数据集,与Lomax (L)分布、指数-Lomax (EL)分布、gamma-Lomax (GL)分布、beta-Lomax (BL)分布和kumaraswami -Lomax (KuL)分布相比,该分布在充分模拟数据集方面具有优势。
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引用次数: 4
A Study on the Selection Pattern of Players in any Team Sport 团体体育项目运动员选拔模式研究
IF 1.9 Pub Date : 2020-03-12 DOI: 10.6092/ISSN.1973-2201/9764
Moumita Chatterjee, S. S. Roy
In this paper, we study the pattern of inclusion and exclusion of players from a team in any team sport. Usually these inclusions and exclusions are related to the player’s performance in the matches previously played. Also the inclusion and exclusion at any particular cycle depends on the player’s history as observed through the number of times he has been included or excluded previously. The focus of this paper is to study this pattern for cricketers who have represented their respective countries in One Day Internationals (ODIs). As observed in the study, there is a distinct difference in the inclusion and exclusion patterns of bowlers and batsmen, and hence the two groups have been studied separately. Respective survival functions over the cycles of inclusion and exclusion have been constructed for both groups. These reveal several interesting features regarding the chances of an ODI cricketer being retained or dropped from the team.
在本文中,我们研究了在任何团队运动中,团队成员的加入和排除模式。通常,这些包括和排除与玩家在之前的比赛中的表现有关。此外,在任何特定循环中的包含和排除都取决于玩家的历史,即通过观察他之前被包含或排除的次数。本文的重点是研究在一天国际(odi)中代表各自国家的板球运动员的这种模式。正如研究中观察到的那样,保龄球手和击球手的纳入和排除模式存在明显差异,因此这两个群体被分开研究。在纳入和排除周期中,两组分别构建了各自的生存函数。这些揭示了关于ODI板球运动员被保留或从团队中删除的机会的几个有趣的特征。
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引用次数: 0
Extended Odd Lomax Family of Distributions: Properties and Applications 扩展奇Lomax族分布:性质与应用
IF 1.9 Pub Date : 2020-01-01 DOI: 10.6092/ISSN.1973-2201/9765
A. Abubakari, C. C. Kandza-Tadi, R. R. Dimmua
The Lomax distribution has a wide range of applications. Due to this, it has had many extensions to render it more flexible and useful to model real world data. In this study, a new family of distributions called the extended odd Lomax family of distributions is introduced by adding two extra shape parameters and one scale parameter. We derived several statistical properties of the new family of distributions. The parameters of the family of distributions are estimated by the use of maximum likelihood method and the consistency of the estimators investigated via Monte Carlo simulations. The usefulness and flexibility of the new family of distributions are illustrated by the use of two real datasets. The results show that the distributions adequately describe the datasets.
Lomax分布具有广泛的应用。因此,它有许多扩展,使其更灵活,更有用,以模拟现实世界的数据。在本研究中,通过增加两个形状参数和一个尺度参数,引入了一种新的分布族,称为扩展奇Lomax分布族。我们导出了新分布族的几个统计性质。利用极大似然法估计了分布族的参数,并通过蒙特卡罗模拟研究了估计量的一致性。两个真实数据集的使用说明了新分布族的实用性和灵活性。结果表明,这些分布能很好地描述数据集。
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引用次数: 1
Some Reliability Properties of Extropy and its Related Measures Using Quantile Function 利用分位数函数的外性可靠性及其相关测度
IF 1.9 Pub Date : 2020-01-01 DOI: 10.6092/ISSN.1973-2201/9887
A. S. Krishnan, S. Sunoj, P. Sankaran
Extropy is a recent addition to the family of information measures as a complementary dual of Shannon entropy, to measure the uncertainty contained in a probability distribution of a random variable. A probability distribution can be specified either in terms of the distribution function or by the quantile function. In many applied works, there do not have any tractable distribution function but the quantile function exists, where a study on the quantile-based extropy are of importance. The present paper thus focuses on deriving some properties of extropy and its related measures using quantile function. Some ordering relations of quantile-based residual extropy are presented. We also introduce the quantile-based extropy of order statistics and cumulative extropy and studied its properties. Some applications of empirical estimation of quantile-based extropy using simulation and real data analysis are investigated.
熵是信息测度家族的新成员,作为香农熵的补充对偶,用于测量随机变量的概率分布中包含的不确定性。概率分布既可以用分布函数来表示,也可以用分位数函数来表示。在许多应用工作中,没有可处理的分布函数,但分位数函数是存在的,在这种情况下,研究基于分位数的外向性是很重要的。因此,本文着重于利用分位数函数推导出外向性的一些性质及其相关测度。给出了基于分位数的残差熵的一些排序关系。引入了阶统计量的分位数外向性和累积外向性,并研究了其性质。通过模拟和实际数据分析,研究了基于分位数的外向性经验估计的一些应用。
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引用次数: 1
Comparisons of Methods of Estimation for a New Pareto-type Distribution 一种新的Pareto型分布估计方法的比较
IF 1.9 Pub Date : 2019-11-06 DOI: 10.6092/ISSN.1973-2201/9331
A. S. Nik, A. Asgharzadeh, S. Nadarajah
Bourguignon et al. (2016) introduced a new Pareto-type distribution to model income and reliability data. The aim of this paper is to estimate the parameters of this distribution from both frequentist and Bayesian view points. The maximum likelihood estimates, method of moment estimates, percentile estimates, least square and weighted least square estimates and maximum product of spacing estimates are considered as frequentist estimates. We have also considered the Bayes estimates of the unknown parameters and the associated credible intervals. The Bayes estimates are computed using an importance sampling method. To evaluate the performance of the different estimates, a Monte Carlo simulation study is carried out. Some real life data sets have been analyzed for illustrative purposes.
Bourguignon等人(2016)引入了一种新的帕累托型分布来对收入和可靠性数据进行建模。本文的目的是从频率论和贝叶斯的角度来估计这种分布的参数。最大似然估计、矩估计法、百分位估计、最小二乘和加权最小二乘估计以及间距估计的最大乘积被认为是频繁度估计。我们还考虑了未知参数的贝叶斯估计和相关的可信区间。贝叶斯估计是使用重要性抽样方法计算的。为了评估不同估计的性能,进行了蒙特卡罗模拟研究。为了便于说明,对一些真实生活中的数据集进行了分析。
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引用次数: 6
The Inverted Exponentiated Gamma Distribution: A Heavy-Tailed Model with Upside Down Bathtub Shaped Hazard Rate 反向指数Gamma分布:具有倒置浴缸型危险率的重尾模型
IF 1.9 Pub Date : 2019-11-06 DOI: 10.6092/ISSN.1973-2201/8782
A. Yadav
In this article, we proposed and studied the inverted exponentiated gamma distribution (IEGD). IEGD is obtained by considering the inverse transformation of exponentiated gamma variate. This distribution has been motivated by the extensive use of the exponentiated gamma model in many applied areas and also due to the fact that this new generalization provides more flexibility to analyze real data with upside down bathtub (UBT) hazard rate. The shape of the distribution has been traced mathematically and found that the proposed model is compatible with UBT hazard rate models. The tail area property is also presented based on the idea of Marshall and Olkin (2007) and it is concluded that the new model belongs to the family of heavy-tailed distributions. Some other characteristics such as reliability, hazard, the quantile function, skewness and kurtosis, stochastic ordering, stress-strength reliability and order statistics have been explicitly derived. The classical and Bayesian estimation procedures have been discussed to estimate the unknown parameter of IEGD. The performances of classical and Bayes estimators are studied in terms of average mean square error (MSE) by conducting Monte Carlo simulations. Finally, a real data set with UBT type hazard rate is analyzed for the illustrative purpose of the study.
本文提出并研究了倒指数伽马分布(IEGD)。通过考虑指数变量的逆变换,得到了egd。这种分布是由于指数伽马模型在许多应用领域的广泛使用,也是由于这种新的泛化为分析具有倒立浴缸(UBT)危险率的实际数据提供了更大的灵活性。在数学上跟踪了分布的形状,发现所提出的模型与UBT风险率模型兼容。基于Marshall和Olkin(2007)的思想,提出了尾面积性质,并得出新模型属于重尾分布族的结论。明确地导出了其它一些特性,如可靠性、危险性、分位数函数、偏度和峰度、随机有序、应力-强度可靠度和有序统计量。讨论了经典估计和贝叶斯估计两种方法来估计egd的未知参数。通过蒙特卡罗模拟研究了经典估计器和贝叶斯估计器的平均均方误差(MSE)。最后,为了说明研究的目的,分析了具有UBT类型危险率的真实数据集。
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引用次数: 4
A New Generalization of the Fréchet Distribution: Properties and Application 一种新的fracimchet分布的推广:性质与应用
IF 1.9 Pub Date : 2019-11-06 DOI: 10.6092/ISSN.1973-2201/8462
Jayakumar Kuttan Pillai, Girish Babu Moolath
A new generalization of the Frechet distribution is introduced and studied. Its structural properties including the quantile function, random number generation, moments, moment generating function and order statistics are investigated. The unknown parameters of the model are estimated using maximum likelihood estimation method and a simulation study is carried out to check the performance of the method. The new model is applied to a real data set to prove empirically its flexibility.
引入并研究了Frechet分布的一个新的推广。研究了它的结构性质,包括分位数函数、随机数生成、矩、矩生成函数和阶统计量。使用最大似然估计方法对模型的未知参数进行估计,并对该方法的性能进行了仿真研究。将新模型应用于实际数据集,从经验上证明了其灵活性。
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引用次数: 1
The Marshall-Olkin Weibull Truncated Negative Binomial Distribution and its Applications Marshall-Olkin Weibull截断负二项分布及其应用
IF 1.9 Pub Date : 2019-11-06 DOI: 10.6092/ISSN.1973-2201/7496
Bindu Krishnan, Dais George
The Weibull distribution is one of the widely known lifetime distribution that has been extensively used for modelling data in reliability and survival analysis. A generalization of both the Marshall-OlkinWeibull distribution and the Weibull truncated negative binomial distribution is introduced and studied in this article. Various distributional properties of the new distribution are derived. Estimation of model parameters using the method of maximum likelihood is discussed. Applications to a real data set is provided to show the flexibility and potentiality of the new distribution over other Weibull models. The first order autoregressive minification process with the new distribution as marginal is also developed. We hope that the new model will serve as a good alternative to other models available in the literature for modeling positive real data in several areas.
威布尔分布是一种广为人知的寿命分布,已被广泛用于可靠性和生存分析中的建模数据。本文介绍并研究了Marshall-OlkinWeibull分布和Weibull截断负二项分布的推广。导出了新分布的各种分布性质。讨论了模型参数的最大似然估计方法。提供了对真实数据集的应用,以显示新分布相对于其他威布尔模型的灵活性和潜力。还发展了以新分布为边际的一阶自回归缩小过程。我们希望新模型将成为文献中其他模型的一个很好的替代品,用于对几个领域的正真实数据进行建模。
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引用次数: 1
Quasi Random Resampling Designs for Multiple Frame Surveys 多帧测量的准随机重采样设计
IF 1.9 Pub Date : 2019-11-06 DOI: 10.6092/ISSN.1973-2201/8930
Cherif Ahmat Tidiane Aidara
In this paper, we present two new algorithms that use the shuffled Sobol sequence to generate the bootstrap resampling designs in multiple frame surveys. We investigate the performance of the proposed algorithms in a simulation study using a three-overlapping frame setup design. The samples were selected independently from the frames using a stratified simple random sampling design. The performance of the proposed methods is comparable with the already established ones such as the Lohr-Rao bootstrap methods for multiple frame surveys in terms of relative percentage bias, coefficient of variation, and empirical coverage probabilities of 95 percent confidence interval.
在本文中,我们提出了两种新的算法,它们使用混洗的Sobol序列来生成多帧调查中的bootstrap重采样设计。我们在使用三个重叠帧设置设计的仿真研究中研究了所提出的算法的性能。使用分层简单随机抽样设计从帧中独立地选择样本。在相对百分比偏差、变异系数和95%置信区间的经验覆盖概率方面,所提出的方法的性能与已经建立的方法(如用于多框架调查的Lohr Rao bootstrap方法)相当。
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引用次数: 2
期刊
Statistica
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