With Price-1, Performance-1, Service-2, the condition price ＝ performance is satisfied (1＝1), but price ＞ service does not hold because 1＞2 is false, and performance ＞ service does not hold either, again because 1＞2 is false. Service ends up with the largest weight, which is the opposite of the instruction to value performance more highly than service.
×Incorrectイ
With Price-1, Performance-2, Service-2, price ＝ performance does not hold because 1 is not equal to 2, and performance ＞ service does not hold either, since 2＞2 is not true and the two are equal. In addition, price ＞ service does not hold because 1＞2 is false, so none of the three conditions is satisfied.
○ウ
正解Table 2 imposes three conditions: price ＝ performance, price ＞ service, and performance ＞ service; and a weight means that the larger the number, the more importance is placed on that item. Choice ウ gives Price-3, Performance-3, Service-1, so price ＝ performance holds as 3＝3, price ＞ service holds as 3＞1, and performance ＞ service holds as 3＞1, satisfying all three conditions at the same time. It also matches the supervisor's instructions that price and performance carry the same weight and that performance is valued more than service, so ウ is appropriate.
×Incorrectエ
With Price-4, Performance-3, Service-3, price ＝ performance does not hold because 4 is not equal to 3, and performance ＞ service does not hold either, since 3＞3 is not true and the two are equal. Of the three conditions, only price ＞ service (4＞3) is satisfied.
ここがポイント
When several evaluation items are assessed together, as in system procurement, each item is given a weight. A weight means that the larger the number, the more importance the item carries, so a qualitative policy such as the supervisor's instruction is translated into a size relationship between numbers.
A table of relative comparisons given with ＝ and ＞ should be treated as a set of simultaneous conditions, and the surest approach is elimination: check the numbers of each choice against the conditions one at a time. If even one condition fails, that choice is inappropriate.