Based on the percentile, would you counsel the student to drop the course?

b. The professor of the statistics course decides to share information about the distribution of grades for the first exam with students in the class. He prepares a histogram for the distribution of raw scores, as shown in Figure 2.42. He also prepares a bar chart, shown in Figure 2.43, using a recoded version of the scores, where ranges of scores are collapsed into five categories: A (90–100), B (80–89), C (70–79), D (60–59), and F (below 60). What level of measurement is the variable shown in the histogram? In the bar graph?

c. Which visual representation do you think would be more useful for students to see and why?