Yesterday, Finlay took a survey during recess. She asked 20 students for the number of apps they had on their phones. The results are shown. Construct a box plot for the data on the number line provided.
68, 70, 70, 71, 75, 80, 81, 82, 84, 75,
75, 80, 75, 77, 75, 80, 83, 80, 71, 70
[Show your work in the space provided.]