A consumer group surveyed customers and asked them to rate the quality of servic

Question

A consumer group surveyed customers and asked them to rate the quality of service delivered by their wireless phone company. A publication of this group summarizes the rating provided by each customer as Excellent, Good, Fair, or Poor. What does it mean for a provider to get a modal rating of Excellent or a median rating of Excellent?

Choose the correct answer below.

A. A modal rating of Excellent means that the least common rating was Excellent. A median rating of Excellent means that at most half of all ratings were Excellent.

B. A modal rating of Excellent means that at most half of all ratings were Excellent. A median rating of Excellent means that the least common rating was Excellent.

C. A modal rating of Excellent means that at least half of all ratings were Excellent. A median rating of Excellent means that the most common rating was Excellent.

D. A modal rating of Excellent means that the most common rating was Excellent. A median rating of Excellent means that at least half of all ratings were Excellent.

Explanation / Answer

Modal means the most occuring value.

Median rating was the middle most value. If middle most value is excellent, it means that the 50% values above it are either excellent or better.

Hence, D is the correct answer.

D. A modal rating of Excellent means that the most common rating was Excellent. A median rating of Excellent means that at least half of all ratings were Excellent.

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