Chapter 9, Problem 2CQ

For Exercises 1–8, use the data in the table, which shows the average annual salaries (both in thousands of dollars) for secondary and elementary school teachers, excluding special and vocational education teachers, in the United States for 11 years. (Source: Bureau of Labor Statistics)

Secondary school teachers, x	Elementary school teachers, y
51.2	48.7
52.5	50.0
54.4	52.2
55.2	53.2
56.0	54.3
56.8	55.3
57.8	56.1
58.3	56.3
59.3	56.8
60.4	57.7
61.4	59.0

2. Calculate the correlation coefficient r and interpret the result.