Use of Out-Dated Frames in Large Scale Sample Surveys

Abstract

Summary

In planning a large scale sample survey it is often found that the available frame from which the sample could be drawn is not up-to-date. In a dynamic population the sample thus drawn does not usually provid~ unbiased estimates of the population characteristics existing during the period of the survey. Unless some adjustments are made on the data collected during the survey, estimate of any population characteristic would be somewhat biased. In this paper some simple methods have been suggested on the basis of a reasonable birth and death process (for taking into account the changing population) which could be easily worked out in most of the practical situations. Some illustrations explaining the suggested methods have also been given.