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SIMPLE RANKED SAMPLING SCHEME: MODIFICATION AND APPLICATION IN THE THEORY OF ESTIMATION OF ERLANG DISTRIBUTION

  • RAFIA GULZAR (Department of Human Resource, College of Business, Dar Al Uloom University) ;
  • IRSA SAJJAD (Department of Mathematics and Statistics, Central South University, Department of Management Sciences, Ibadat International University) ;
  • M. YOUNUS BHAT (Department of Mathematical Sciences, Islamic University of Science and Technology) ;
  • SHAKEEL UL REHMAN (Department of Management Studies, School of Business Studies, Islamic University of Science and Technology)
  • Received : 2022.06.13
  • Accepted : 2022.11.15
  • Published : 2023.03.30

Abstract

This paper deals in the study of the estimation of the parameters of Erlang distribution based on rank set sampling and some of its modifications. Here we considered Maximum Likelihood (ML) and the Bayesian technique to estimate the shape and scale parameter of Erlang distribution based on RSS and its some modifications such as ERSS, MRSS, and MRSSu. The derivation for unknown parameters of Erlang distribution is well presented using normal approximation to the asymptotic distribution of ML estimators. But due to the complexity involves in the integral, the Bayes estimator of unknown parameters is obtained using MCMC method. Further, we compared the MSE of estimation in different sampling schemes with different set sizes and cycle size. A real-life data application is also given to illustrate the efficiency of the proposed scheme.

Keywords

Acknowledgement

We are grateful to the anonymous referees for carefully read- ing the manuscript, detecting many mistakes and for offering valuable comments and suggestions which enabled us to substantially improve the paper. The authors would like to acknowledge and grateful to Deanship of Graduate and Research Studies of Dar Al Uloom University (DAU), Saudi Arabia Riyadh for financial support. The authors are exceptionally indebted to Professor Abdulrahman Alsultan, Dean of college of Business Dar Al Uloom University (DAU) for his motivation, enthusiasm, and support for this research.

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