this article examines statistical inference for  where and are independent but not identically distributed pareto of the first kind (pareto (i)) random variables with same scale parameter but different shape parameters. the maximum likelihood, uniformly minimum variance unbiased and bayes estimators with gamma prior are used for this purpose. simulation studies which compare the estimators are ...

The Liu estimator has consistently been demonstrated to be an attractive shrinkage method for reducing the effects of multicollinearity. The Poisson regression model is a well-known model in applications when the response variable consists of count data. However, it is known that multicollinearity negatively affects the variance of the maximum likelihood estimator (MLE) of the Poisson regressio...

Abstract Background Beta-thalassemia is a common hereditary hemoglobinopathy, which is a reason of microcytic hypochromic anemia. Patients with major thalassemia require multiple blood transfusions. This study evaluated growth in thalassemic patient and relationship with ferritin level. Materials and Methods This is a cross sectional study on seventy patients (36 boys, 34girls) with transfu...

Inverse sampling design is generally considered to be appropriate technique when the population is divided into two subpopulations, one of which contains only few units. In this paper, we derive the Horvitz-Thompson estimator for the population mean under inverse sampling designs, where subpopulation sizes are known. We then introduce an alternative unbiased estimator, corresponding to post-st...

The aim of this paper is to project extreme precipitation events in an arid and a semiarid station. In order to project climate change based on general circulation models (GCMs), we have applied LARS-WG[1] downscaling tool. This stochastic weather generator down-scaled the climate of two synoptic stations using HADCM3 model and A2 emission scenario for 2040. We extracted extreme precipitation e...

background this study aim to determine the association between height and cancer in the children aged 14 years at the time of diagnosis in rasht, iran. materials and methods in this cross-sectional study, height of patients with a malignancy (≤14) at the time of diagnosis measured in the standard charts of united states national center for the health statistics (nchs). data were reported by des...

In credibility ratemaking, one seeks to estimate the conditional mean of a given risk. The most accurate estimator (as measured by squared error loss) is the predictive mean. To calculate the predictive mean one needs the conditional distribution of losses given the parameter of interest (often the conditional mean) and the prior distribution of the parameter of interest. Young (1997. ASTIN Bul...

state estimation is the foundation of any control and decision making in power networks. the first requirement for a secure network is a precise and safe state estimator in order to make decisions based on accurate knowledge of the network status. this paper introduces a new estimator which is able to detect bad data with few calculations without need for repetitions and estimation residual cal...

Let be a random sample from a normal distribution with unknown mean and known variance The usual estimator of the mean, i.e., sample mean is the maximum likelihood estimator which under squared error loss function is minimax and admissible estimator. In many practical situations, is known in advance to lie in an interval, say for some In this case, the maximum likelihood estimator...