Table 1: 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) 3.32 2.93 2.46 1.99
Anchors 4 (ME) 3.02 2.58 1.92 1.44
Anchors 3 (St. D.) 1.79 1.74 1.53 1.53
Anchors 4 (St. D.) 1.91 1.86 1.22 1.22