Based on the data shown below, calculate the correlation coefficient and the equation of the least squares line. Round all numerical values to three decimal places as needed.
x y
4 22.72
5 27.8
6 30.48
7 32.06
8 36.44
9 37.52
10 38.9
11 41.98
12 48.06
13 46.84
(a) What is the correlation coefficient?
`r =`
(b) What is the equation of the least squares line?
`y =`
