Estimators for a Finite Population Variance and sample size in Stratified Random Sampling (SRS)

This paper is concerned with the methods of the sample size calculations, especially through proposed estimator which depends in its formation on finite population variance in stratified random sample. Its properties are studied and compared with proposed estimator by the Arcos, C.A & Rueda, G.M. The conclusion is that the proposed estimator has better properties than the previous estimator.