ojs2 has produced an error Message: WARNING: mkdir(): Permission denied In file: /var/www/html/ojs246_old/lib/pkp/classes/file/FileManager.inc.php At line: 306 Stacktrace: Server info: OS: Linux PHP Version: 5.6.33-0+deb8u1 Apache Version: Apache/2.4.10 (Debian) DB Driver: mysql DB server version: 5.7.27
ojs2 has produced an error Message: WARNING: assert(): Assertion failed In file: /var/www/html/ojs246_old/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 308 Stacktrace: Server info: OS: Linux PHP Version: 5.6.33-0+deb8u1 Apache Version: Apache/2.4.10 (Debian) DB Driver: mysql DB server version: 5.7.27
Estimator of Population Mean in Stratified Random Sampling : Searls Approach | Wongcharoensanti | งดใช้ระบบ 3-31 กค 66 Burapha Science Journal

Estimator of Population Mean in Stratified Random Sampling : Searls Approach

Narupon Wongcharoensanti, Jirawan Jitthavech, Vichit Lorchirachoonkul

Abstract


The study proposes two new population mean estimators using the coefficient of variation in stratified random sampling without replacement. The first estimator without an auxiliary variable is developed from Searls estimator and the second estimator is a ratio estimator developed from Jitthavech and Lorchirachoonkul ratio estimator. The conditions for the efficiency of the first proposed estimator higher than the conventional estimator without auxiliary variable and for the efficiency of the second proposed estimator higher than the conventional separate ratio estimator are also analyzed. The simulation confirms the consistency of the two conditions. Moreover, it can be concluded from the simulation that the efficiency of the second estimator is higher than the separate ratio estimator developed from Sisodia and Dwivedi ratio estimator with the lower biases.

 

Keywords:  Searls estimator, Jitthavech and Lorchirachoonkul ratio estimator, stratified random sampling without

                     replacement, relative efficiency.


Full Text:

PDF

Refbacks

  • There are currently no refbacks.