The dot plots below show the scores for a group of students for two rounds of a quiz: Two dot plots are shown one below the other. The title for the dot plot on the top is Round 1 and the title for the bottom plot is Round 2. Below the line for each dot plot is written Score. There are markings from 1 to 5 on the line at intervals of one. There are 2 dots above the mark 2, there are 3 dots above the mark 3, there are 2 dots above the mark 4 and there is 1 dot above the mark 5. For the bottom dot plot there are there are 4 dots above the mark 4 and there are 4 dots above the mark 5.

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

There is no overlap between the data.
Round 2 scores are lower than round 1 scores.
Round 1 scores are higher than round 2 scores.
The range of round 1 is greater than the round 2 range