Brain list to the one that get the answer right : d me
the box plot represents the number of math problems on the quizzes for an algebra course
what is the range of the data?

The range is the difference between the highest and lowest number.

So the lowest number on this box plot is 5 and the highest is 15, so we will find the difference between them.

15 - 5 = 10. 

So the answer to your question should be : 10. 

It's easy really.. hope this helps :)