Got shoes? How many pairs of shoes, on average, do female teens have? To find out, an AP® Statistics class conducted a survey. They selected an SRS of 20 female students from their school. Then they recorded the number of pairs of shoes that each student reported having. Here are the data:

50 26 26 31 57 19 24 22 23 38 13 50 13 34 23 30 49 13 15 51