W. G. Cochran Cochran, “The Estimation of the Yields of the Cereal Experiments by Sampling for the Ratio of Grain to Total Produce,” Journal of Agricultural Science, Vol. 30, No. 2, 1940, pp. 262-275. doi:10.1017/S0021859600048012

has been cited by the following article:

• TITLE: A Regression Type Estimator with Two Auxiliary Variables for Two-Phase Sampling

  AUTHORS: Naqvi Hamad, Muhammad Hanif, Najeeb Haider

  KEYWORDS: Mean Square Error; Precision; Two-Phase Sampling; Auxiliary Variable; Regression Type Estimator; Simple Random Sampling without Replacement

  JOURNAL NAME: Open Journal of Statistics, Vol.3 No.2, April 22, 2013

  ABSTRACT: This paper is an extension of Hanif, Hamad and Shahbaz estimator [1] for two-phase sampling. The aim of this paper is to develop a regression type estimator with two auxiliary variables for two-phase sampling when we don’t have any type of information about auxiliary variables at population level. To avoid multi-collinearity, it is assumed that both auxiliary variables have minimum correlation. Mean square error and bias of proposed estimator in two-phase sampling is derived. Mean square error of proposed estimator shows an improvement over other well known estimators under the same case.