Modified maximum likelihood estimators using ranked set sampling

Balci, SİBEL; AKKAYA, AYŞEN; Ulgen, B.

doi:10.1016/j.cam.2012.08.030

Modified maximum likelihood estimators using ranked set sampling

Atıf İçin Kopyala

Balci S., AKKAYA A., Ulgen B. E.

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, cilt.238, ss.171-179, 2012 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 238
Basım Tarihi: 2012
Doi Numarası: 10.1016/j.cam.2012.08.030
Dergi Adı: JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.171-179
Kocaeli Üniversitesi Adresli: Hayır

Özet

The closed-form maximum likelihood estimators (MLEs) of population mean and variance under ranked set sampling (RSS) do not exist since the likelihood equations involve nonlinear functions and have usually no explicit solutions. We derive modified maximum likelihood (MML) estimators for the population mean and variance under RSS and show that they are considerably more efficient than RSS estimators. Furthermore, we suggest two new estimators for the unknown parameters using two modified ranked set sampling methods and show that these methods make the variances of both MML and RSS estimators smaller. (C) 2012 Elsevier B.V. All rights reserved.