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Article
Enhancing process mean monitoring efficiency using extended-EWMA control chart with auxiliary information
For monitoring the outputs of production processes, statistical process control (SPC) is widely used. The control chart (CC) stands as the most important SPC tool for differentiating between unnatural and natu...
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Article
Open AccessProperties, quantile regression, and application of bounded exponentiated Weibull distribution to COVID-19 data of mortality and survival rates
Well-known continuous distributions such as Beta and Kumaraswamy distribution are useful for modeling the datasets which are based on unit interval [0,1]. But every distribution is not always useful for all ty...
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Article
Open AccessEfficient estimation of population variance of a sensitive variable using a new scrambling response model
This study introduces a pioneering scrambling response model tailored for handling sensitive variables. Subsequently, a generalized estimator for variance estimation, relying on two auxiliary information sourc...
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Article
Efficient Estimation of Mean in Two-Phase Sampling when Measurement Error and Non-Response are Simultaneously Present
In the present paper, we suggest the generalized classes of efficient estimators for finite population mean estimation in two-phase sampling if non-response and measurement errors are simultaneously present. F...
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Article
Mean Estimation of A Sensitive Variable Using Optional Randomized Response Technique in Two-Phase Sampling When Non-response and Measurement Error are Simultaneously Present
A generalized class of estimators for finite population mean of a sensitive variable is proposed in the presence of non-response and measurement errors using randomized response technique in two phase sampling...
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Article
Ratio Estimators in the Presence of Outliers Using Redescending M-Estimator
In this paper, the ratio estimators are suggested which perform better than other ratio estimators in the presence of outliers using redescending M-estimator. For this purpose, we adopt the ratio estimators pr...
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Article
A Multivariate Exponential Estimator for Vector of Population Means in Two-Phase Sampling
This study is concerned with construction of the generalized multivariate exponential estimator for estimating a population mean vector in the two-phase sampling using multi-auxiliary variables when population...
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Article
Open AccessGeneralized Chain Exponential-Type Estimators under Stratified Two-Phase Sampling with Subsampling the Nonrespondents
In this paper some generalized exponential-type chain estimators have been proposed for the finite population mean in the presence of nonresponse under stratified two-phase sampling when mean of another auxili...
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Article
HEWMA Control Chart Using Auxiliary Information
A type of hybrid exponential weighted moving average (HEWMA) control chart is presented by using two-parametric ratio estimator to strengthen the performance of control chart for detecting shift in process mea...
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Article
A Note on Kumar (2016): Improved Estimation of Population Mean in the Presence of Measurement Error and Non-response
Kumar (J Stat Theory Pract 10(4):707–720, 2016) introduced an estimator for mean in the presence of non-response and measurement error. However, the mean square error (MSE) and the minimum MSE expressions present...
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Article
Open AccessA Generalized Class of Estimators for Estimating Population Mean in the Presence of Non-Response
Koyuncu and Kadilar proposed an estimator based on single auxiliary variable with complete response in stratified random sampling. In this paper, we extended Koyuncu and Kadilar’s estimator to a more generaliz...
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Article
Generalized Exponential-Type Estimators for Population Mean Taking Two Auxiliary Variables for Unknown Means in Stratified Sampling with Sub-sampling the Non-Respondents
In this paper, we have considered stratified two-phase sampling design with sub-sampling the non-respondents in the presence of non-response for estimating population mean considering the information of two au...
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Article
Generalized Exponential Estimators for Population Variance Under Two-Phase Sampling
In this study, two-phase sampling is considered for estimating the population variance of study variable taking two auxiliary variables. The proposed generalized estimator and class of estimators are the expon...
