Juan wants to find the mode of the data set below.

2, 7, 7, 11, 6, 3, 7, 4, 1, 9, 6, 2, 3, 8, 5, 1

He decides to use a stem and leaf plot to help him, but his teacher tells him that he should consider using a line plot instead. Why is a line plot a better choice than a stem and leaf plot for this set?