Table 2: Simulation studies: mean error (ME)/standard deviation (St. D.) analysis of trilateration, K-NN, MinMax, and proposed hybrid technique (sample size 100).

Actual position Trilateration (m) MinMax (m)K-NN (m) Hybrid approach (m)

Anchors 3 (ME) 5.29 2.46 1.9 1.38
Anchors 4 (ME) 4.14 2.13 2.2 1.55
Anchors 3 (StD) 3.83 1.57 1.48 1.13
Anchors 4 (StD) 3.85 1.93 1.4 0.98