Improved Ratio Estimators in Stratified Sampling

Abstract

SYNOPTIC ABSTRACTKADILAR and CINGI (2003) proposed some classes of combined ratio estimators for estimating the population mean by using transformations introduced by SISODIA and DWIVEDI (1981), SINGH and KAKRAN (1993) and UPADHYAYA and SINGH (1999). In this paper, we introduce a class of combined ratio-type estimators, which is more efficient than the usual combined ratio estimator; a class of estimators introduced by KADILAR and CINGI (2003), and is as efficient as the combined linear regression estimator.