An Improved Class of Chain Ratio-Product Type Estimators in Two-Phase Sampling Using Two Auxiliary Variables

Table 2

Percentage Relative Efficiencies (PREs) of different estimators of  𝑌 with respect to 𝑦.

Estimators	Population I	Population II
𝑦	100	100
𝑦^dc𝑅	136.91	730.81
𝑦^dc𝑃	*	*
𝑦^dcRe	184.36	259.55
𝑦^dcPe	*	*
𝑦^𝑑RP	133.95	156.96
𝑦^dcRPe	189.27	763.30

∗Data is not applicable.