Table 1: Relationship between linguistic expression and triangular fuzzy variable.

Linguistic expression Triangular fuzzy variable

Low (about 1) (0.5, 1, 1.5)
Medium (about 2) (1.5, 2, 2.5)
High (about 3) (2.5, 3, 3.5)

Large (about 700) (600, 700, 800)
Small (about 500) (400, 500, 600)

Very sensitive (about 40) (30, 40, 50)
Sensitive (about 20) (10, 20, 30)

Very sensitive (about 8) (7, 8, 9)
Sensitive (about 6) (5, 6, 7)

Very sensitive (about 3) (2, 3, 4)
Sensitive (about 1) (0.5, 1, 1.5)