Pairwise comparisons are entered on a page as shown in the figure below, by clicking on or between words that express your judgment about the relative importance or preference or likelihoods (see Pairwise Comparisons Contexts) of the two elements shown on each line.
The AHP pairwise relative verbal scale consists of the following words:
| EX | Extremely -- an oder of magnitude (10 to 1) or more |
| VS | Very Srongly |
| S | Strongly |
| M | Moderate |
| EQ | Equal |
The words are not precise, but because of the way Comparion computes priorities from redundant pairwise comparisons, it is possible to derive accurate ratio scale priorities from ordinal judgments.
In the example below, we are asked to compare the relative importance of each pair of objectives with respect to the decision of which car to purchase.
For each pair, you can enter a judgment by clicking on the bar or a word below the bar that expresses your judgment about the relative importance of one objective over the other objective. You select equal, or specify an intensity on either side of equal. The intensities can be moderate, strong, very strong or extreme, or between any of the words such as between moderately and strongly.
In the top line of the example above, a judgment is made that "Performance" is strongly more important than "Cost of Ownership" with respect to the decision "Purchase a new car."
You can hover your mouse over the letters or boxes below the letters to see the verbal judgments they represented by the letters.
Your judgment will be automatically recorded when you go to another step by clicking the Next button.
You can also enter judgments about the relative preference of two alternatives with respect to an objective using the multi-paiwise verbal comparison method.
