Scale for pairwise comparisons.
|Relative intensity ||Definition||Explanation|
|1||Of equal value||Two requirements are of equal value|
|3||Slightly higher value||Experience slightly favors one requirement over another|
|5||Essential or strong value||Experience strongly favors one requirement over another|
|7||Very strong value||A requirement is strongly favored and its dominance is demonstrated in practice|
|9||Extreme value||The evidence favoring one over another is of the highest possible order of affirmation|
|2, 4, 6, and 8||Intermediate values between two adjacent judgments||When compromise is needed|