Table 3: Average error distances for all participants by model. (Unit: cm)

No feedback Auditory feedback Haptic feedback Visual feedback
I line 0.51 0.35 0.07 0.16
S line 0.35 0.27 0.16 0.24
Circle 0.48 0.20 0.29 0.15
Square 0.27 0.24 0.14 0.17
Slanted S line 0.49 0.41 0.26 0.31
Donut shaped circle 0.27 0.25 0.22 0.17
Spiral 0.26 0.47 0.25 0.33
Arbitrary line 1 0.43 0.25 0.20 0.20
Arbitrary line 2 0.30 0.26 0.27 0.22
Chair shaped line 0.39 0.39 0.17 0.20
Flower shaped line 0.34 0.20 0.30 0.19
Average error distance 0.37 0.30 0.21 0.21
Error distance reduction (%) 100.00 80.63 56.75 57.29