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Table 1 The scale of preference between two factors in AHP (Saaty 1980)

From: GIS-based gully erosion susceptibility modeling, adapting bivariate statistical method and AHP approach in Gombe town and environs Northeast Nigeria

Preference factor Degree of preference Definition
1 Equally two factors have equal importance to the desired objective
3 Moderately One factor slightly has more importance than the other to the desired objective
5 Strongly A factor strongly has higher importance than the other towards achieving the desired objective
7 Very strongly Here a factor has very strong importance more than the other towards achieving its objective
9 Extremely One factor is extremely more important than the other toward achieving the desired objective
2,4,6,8 Intermediate when factor importance is between 1,3,4,7 and 9