Open Access

Table 3

The fundamental scale.

Intensity of importance on an absolute scale Definition Explanation
1 Equal importance Two activities contribute equally to the objective
3 Moderate importance of one over another Experience and judgment moderately favor one criterion over another
5 Essential or strong importance Experience and judgment strongly favor one criterion over another
7 Very strong importance A criterion is strongly favored and its dominance demonstrated in practice
9 Extreme importance The evidence favoring one criterion over another is of the highest possible order of affirmation
2, 4, 6, 8 Intermediate values between the two adjacent judgments When compromise is needed

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