Consider the data in Table 2.How many apps would satisfy the marginal decision rule?
A)1
B)2
C)3
D)4

Question

Quizplus · Accepted Answer

According to the marginal decision rule, an alternative is chosen if and only if its score is greater than or equal to the average score for that criterion. 
For App 1, the average score for Functionality is (9+10)/2 = 9.5, which is greater than its score of 8. Therefore, App 1 is not chosen based on Functionality. 
Similarly, for App 2, the average score for Aesthetics is (8+7)/2 = 7.5, which is equal to its score. Thus, App 2 satisfies the marginal decision rule for Aesthetics. However, for Functionality and Simplicity, the average scores are higher than its scores, so it is not chosen based on those criteria. 
For App 3, the average score for Functionality is (9+10)/2 = 9.5, which is equal to its score. Thus, App 3 satisfies the marginal decision rule for Functionality. However, for Aesthetics and Simplicity, the average scores are lower than its scores, so it is not chosen based on those criteria. 
For App 4, the average score for Simplicity is (5+5)/2 = 5, which is equal to its score. Thus, App 4 satisfies the marginal decision rule for Simplicity. However, for Functionality and Aesthetics, the average scores are higher than its scores, so it is not chosen based on those criteria. 
Therefore, only App 2, App 3, and App 4 satisfy the marginal decision rule for at least one criterion. However, App 2 and App 3 do not satisfy the rule for all three criteria, while App 4 satisfies the rule for one criterion. Thus, the best choice based on the marginal decision rule would be App 4.

Consider the Data in Table 2