16. Test Scores The test scores on a 100-point test were recorded for 20 students.

61 93 91 86 55 63 86 82 76 57 94 89 67 62 72 87 68 65 75 84

a. Use a stem and leaf plot to describe the data.

b. Describe the shape and location of the scores.

c. Is the shape of the distribution unusual? Can you think of any reason that the scores would have such a shape?