Transformations after sampling

Abstract

Three simple transformations are proposed in the context of ratio and product methods of estimation, based on any probability sampling design, and the usual unbiased estimation under varying probability sampling. These transformations may be effected

after the data are collected in a survey. The objective is to obtain improved estimators of the population total

Keywords:

• Bias
• mean squared error
• product method: ratio method
• regression
• method: simple random sampling
• systematic sampling
• varying probability sampling