The dot plots below show the scores for a group of students who took two rounds of a quiz:
round 1
5.2, 6.3, 7.4, 8.1,9.0
round2
5.0,6.6,7.0,8.2,9.2
Which of the following inferences can be made using the dot plot?
The range of each round is the same.
There is no overlap between the data.
Round 1 scores were higher than round 2 scores.
Round 2 scores were lower than round 1 scores.