A coffee company surveyed 40 potential customers to see where they would like the company's new organic coffee sold. Respondents were given the following four locations and asked to choose as many as they liked: grocery stores, drugstores, health food stores, and big box stores. The results are summarized in the bar graph below, with the number of times each location was chosen noted above the corresponding bar.
What was the average number of locations chosen per potential customer?
