P.P.S. Design with Categorical Variates to Estimate Dicho-Ratios 

Jairo Alberto Fúquene & Leonardo Bautista                                    

 

 

Abstract

In probability proportional-to-size designs (P.P.S.) the selection probabilities that minimize the approximate variance of a totals ratio for dichotomic variables-dicho–ratio are found and their efficiency is compared with respect to S.I. design.

 

Key words: Auxiliary categorical information, Totals ratio estimation, Dicho-ratio, p.p.s. design, Dichotomic variables.

 

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