Some Improved Classes of Estimators in Stratified Sampling Using Bivariate Auxiliary Information

Table 1

and of different combined estimators.

	0.6		0.7		0.8		0.9		0.9		0.8		0.7		0.6
	0.6		0.7		0.8		0.9		0.8		0.7		0.6		0.5
	0.6		0.7		0.8		0.9		0.7		0.6		0.5		0.4
Estimators
	0	100	0	100	0	100	0	100	0	100	0	100	0	100	0	100
	1	96.00	1	117.56	1	154.49	1	211.78	1	236.59	1	168.39	1	127.97	1	102.94
	0	178.81	0	230.11	0	329.15	0	564.57	0	550.00	0	321.64	0	230.37	0	175.72
	3.87	178.77	3.46	230.43	3.14	328.86	2.92	562.99	2.95	541.45	3.19	320.36	3.53	229.21	4.02	175.53
	18.22	178.81	25.21	230.11	44.60	329.15	207.86	564.57	103.66	550.00	33.90	321.64	20.58	230.37	15.25	175.72
	18.98	130.63	13.23	139.16	10.43	143.77	9.14	119.34	6.40	406.71	9.89	230.53	14.63	172.55	24.54	143.63
	2.04	97.44	2.33	119.64	2.67	157.84	3.08	218.06	3.32	243.37	2.86	171.81	2.45	130.03	2.11	104.34
	2.77	116.00	3.29	147.34	3.99	202.00	4.88	307.31	5.25	338.91	4.24	217.45	3.46	155.73	2.86	122.12
	9.67	164.20	16.15	219.66	45.50	327.67	81.99	646.17	72.23	594.80	48.80	314.14	17.00	213.07	9.63	161.47
	2.01	96.45	2.29	118.20	2.62	155.57	3.01	213.84	3.25	238.74	2.81	169.44	2.41	128.61	2.08	103.36
	3.29	156.26	4.33	196.09	6.39	277.78	12.81	526.31	12.29	526.31	6.10	277.78	4.09	196.09	3.15	156.26
	9.36	178.81	7.67	230.11	6.47	329.15	5.71	564.57	5.39	550.00	6.14	321.64	7.28	230.37	9.17	175.72
	1.74	85.04	1.89	86.93	2.03	88.40	2.23	89.99	2.16	90.63	1.96	89.92	1.80	88.57	1.69	87.28
	9.90	178.81	8.00	230.11	6.73	329.15	5.87	564.57	4.07	550.00	4.79	321.64	5.76	230.37	7.18	175.72
	6.76	178.81	9.24	230.11	14.17	329.15	28.50	564.57	14.63	550.00	9.47	321.64	6.91	230.37	5.35	175.72
	3.78	180.61	5.19	236.10	7.96	345.39	16.52	674.09	16.29	731.60	7.47	348.51	4.74	230.25	3.47	176.36
	3.56	180.89	5.99	236.77	8.21	346.11	17.11	674.87	17.09	732.41	7.76	349.12	5.16	231.58	4.37	176.72
	3.77	180.96	5.87	236.97	8.01	346.78	17.27	675.17	17.17	733.01	7.94	349.24	5.24	232.19	4.20	176.87
	21.07	182.84	14.45	239.56	5.45	349.67	3.45	678.58	3.18	750.01	5.09	351.68	14.23	234.40	16.98	178.75
	1.27	182.78	1.38	238.11	1.98	348.07	2.61	678.00	1.22	748.16	1.08	351.24	1.06	234.23	12	178.67
	3.83	181.98	5.22	238.54	7.97	347.88	16.52	678.17	17.52	749.21	7.73	351.45	4.89	234.38	3.61	178.73
	3.83	182.83	5.22	239.27	7.97	349.36	16.52	678.44	17.52	749.91	7.73	351.61	4.89	234.39	3.61	178.74
	3.82	181.92	5.21	238.54	7.97	347.88	16.52	678.17	17.52	749.20	7.73	351.45	4.89	234.23	3.60	178.73