Table 8 The 1–9 scale for comparison of two factors [46]
Intensity of importance | Definition | Explanation |
|---|---|---|
1 | Equal importance | A is as equally important as B |
3 | Moderate importance | A is moderate important than B |
5 | Strong importance | A is strong important than B |
7 | Very strong importance | A is very strong important than B |
9 | Extreme importance | A is extreme important than B |
2, 4, 6, 8 | Compromise | The importance of A over B is in the middle of the above adjacent judgments |
1/2, 1/3, …,1/9 | Unimportance | If A has one of the above nonzero numbers assigned to it when compared with B, then B has the reciprocal value when compared with A |