The class in Exercise 1 wants to estimate the variability in the number of pairs of shoes that female students have by estimating the population standard deviation σ.

Exercise 1.

How many pairs of shoes, on average, do female teens have? To find out, an AP® Statistics class 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:

Transcribed Image Text:

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