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Table 9 Statistical analysis of performance

From: A visual tool for accessibility study of pipeline maintenance during design

Medium

Mean (points)

Std. Deviation (points)

p-value

2D plan drawing

36.0

13.5

2D & 3D

0.000*

3D model

53.8

17.0

2D & VAO

0.004*

VAO Checker

48.0

17.3

3D & VAO

0.020*

  1. *the data is statistically significant.