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Table 2 Fundamental scale of Saaty (1977)

From: GIS-multicriteria evaluation using AHP for landslide susceptibility mapping in Oum Er Rbia high basin (Morocco)

Value Definition Explanation
1 Equally important Two decision elements equally influence the parent decision element.
3 Moderately more important One decision element is moderately more influential than the other.
5 Much more important One decision element has more influence than the other.
7 Very much more important One decision element has significantly more influence over the other.
9 Extremely more important The difference between influences of the two decision elements is extremely significant.
2, 4, 6, 8 Intermediate judgment values Judgment values between equally, moderately, much, very much and extremely.