Question

The dot plots below show the scores for a group of students for two rounds of a quiz:

Which of the following inferences can be made using the dot plots?

A. The range of each round is the same.

B. There is no overlap between the data.

C. Round 1 scores were higher than round 2 scores.

D. Round 2 scores were lower than round 1 scores.

Answer 1

Answer: A. The range of each round is the same.

Explanation:

Below shows the total score for both rounds. As you can see the totals for both rounds are very close so their range is most likely the same.

Round 1

(2 x 2) + (3 x 3) + (4 x 2) + 5 = 26

4 9 8

Round 2

(3 x 2) + (4 x 3) + (5 x 2) + 2 = 30
6 12 10