Browsing by Author "Efendi, R."
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Item KOMBINASI PENAKSIR RASIO-PRODUK PROPORSI EKSPONENSIAL UNTUK RATA-RATA POPULASI PADA SAMPLING ACAK SEDERHANA(2014-03-25) Indrayani, A. F.; Efendi, R.; Sirait, H.Three estimators discussed in this paper are the Exponential Proportions Ratio Estimator, The Product Estimator Exponential Proportion, and The Combination-Product Ratio Exponential Proportions Estimator on simple random sampling proposed by Singh et. al. [Pakistan Journal of Statistics and Operations Research, 1(2): 18-32]. The three proposed estimators are biased estimators. Then the mean square error of each estimator is evaluated. Furthermore, the mean square errors are compared to obtain the most efficient one. A numerical example is given at the end of discussion.Item PERBANDINGAN PENAKSIR REGRESI LINIER SEDERHANA PADA SAMPLING BERPERINGKAT, SAMPLING EKSTRIM BERPERINGKAT DAN SAMPLING MEDIAN BERPERINGKAT(2014-03-25) Aritonang, E. W.; Harison; Efendi, R.This paper discusses the efficient sampling methods to ranked set sampling, extreme ranked set sampling, and median ranked set sampling for simple linear regression estimators whose population mean known with concomitant variables. This paper is a review of article “Regression Estimator in Extreme and Median Ranked Set Sampling “ by Muttlak. Their relative efficiency have been compared in order to find the most efficient estimator