A Simplified Approach for Two-Dimensional Optimal Controlled Sampling Designs

Table 12

The probabilities of selecting the undesirable samples for the proposed, Tiwari and Nigam [13] [TN-1] and Tiwari and Nigam [15] [TN-2] plans.

	TN-1	TN-2	Proposed plan
Example A.1 (4 × 3 population, N = 12, n = 8)	0.1	0	0
Example A.2 (3 × 3 population, N = 9, n = 3)	0.1	0	0
Example A.3 (8 × 3 population, N = 24, n = 10)	0	0	0