Enhanced Estimation of the Population Mean Using Two Auxiliary Variables under Probability Proportional to Size Sampling

Table 5

Mean square error using simulated data I–IV.

Estimators	Population I	Population II	Population III	Population IV
	31.67431	81.16491	43.94658	20.86359
	6.820753	7.476992	70.16388	18.44416
	112.6348	304.2201	175.3402	108.1569
	6.729504	7.473674	35.17335	9.010162
	12.23416	25.65004	37.35335	9.044646
	65.14118	174.0216	89.94201	53.901
	6.727151	7.461932	35.14484	8.517024
	6.729111	7.471383	35.1712	8.921513
	6.726784	7.457982	35.14769	8.420505
	31.6675	81.1165	43.93609	20.49454
	3.565223	3.826369	24.3064	5.094608
	3.565226	3.82638	24.30643	5.099009
	3.565223	3.826369	24.3064	5.09439
	3.565257	3.82654	24.30692	5.111096
	3.565224	3.826373	24.3064	5.095569
	3.565235	3.826434	24.30648	5.100378
	3.565223	3.826369	24.3064	5.094713
	3.565223	3.82637	24.3064	5.094717
	3.565226	3.826381	24.30647	5.100333
	3.565373	3.827004	24.3087	5.127155