Water quality ratings of 36 Southern California beaches were given in the article “How Safe Is the Surf?” (Los Angeles Times, October 26, 2002). The ratings, which ranged from A to F and which reflect the risk of getting sick from swimming at a particular beach, are given in the following list:

a. Summarize the given ratings by constructing a relative frequency distribution and a bar chart. Comment on the interesting features of your bar chart.

b. Would it be appropriate to construct a dotplot for these data? Why or why not?

Transcribed Image Text:

A+ A A D D A A+ B F F A A A+ A B A+ A C F C A+ D D F- tout с A+ <<< A- A+ A A+ B A+ A+