Some improved estimators in double sampling using two auxiliary variables
Other Title(s)
بعض المقدرات المتطورة في العينات المزدوجة باستخدام اثنين من المتغيرات المساعدة
Author
Source
Sultan Qaboos University Journal for Science
Issue
Vol. 19, Issue 2 (31 Dec. 2014), pp.97-100, 4 p.
Publisher
Sultan Qaboos University College of Science
Publication Date
2014-12-31
Country of Publication
Oman
No. of Pages
4
Main Subjects
Abstract AR
داش و ميشرا 1 اقترحا فئة متطورة للمقدرات بدون تحديد المقدر الأمثل و لكن للأسف أعطوا التعبير الخاطئ لسلسة تايلو للفئه المقدرة و أيضا تعابير الحد الأدنى لمتوسط الخطأ التربيعي لها أيضا غير صحيحه.
و قد بينا هنا أن فئة من سلسلة المقدرات لأحمد وآخرون.
[2[ هي أكثر كفاءة من داش و ميشرا [1[ مع الحد الأدنى لمتوسط الخطأ التربيعي.
Abstract EN
Dash and Mishra [1] suggested an improved class of estimators without defining the optimum estimator.
However, they gave the wrong Taylor’s series expression of their class of estimator and their minimum mean squared error expressions are also incorrect.
Here we show that Ahmed et al.’s [2] class of chain estimators is more efficient than Dash and Mishra’s [1], with minimum mean squared error.
American Psychological Association (APA)
Ahmad, Muhammad S.. 2014. Some improved estimators in double sampling using two auxiliary variables. Sultan Qaboos University Journal for Science،Vol. 19, no. 2, pp.97-100.
https://search.emarefa.net/detail/BIM-531872
Modern Language Association (MLA)
Ahmad, Muhammad S.. Some improved estimators in double sampling using two auxiliary variables. Sultan Qaboos University Journal for Science Vol. 19, no. 2 (2014), pp.97-100.
https://search.emarefa.net/detail/BIM-531872
American Medical Association (AMA)
Ahmad, Muhammad S.. Some improved estimators in double sampling using two auxiliary variables. Sultan Qaboos University Journal for Science. 2014. Vol. 19, no. 2, pp.97-100.
https://search.emarefa.net/detail/BIM-531872
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 99-100
Record ID
BIM-531872