1. Using the data given below, calculate the linear correlation between the two variables x and y.
X 1 8 2 1 5
Y 0 7 8 5 6
2. The data below shows the number of years of education beyond high school (X) and income (Y) (in tens of thousands of dollars). Calculate the correlation coefficient r.
X 4 8 1 8
Y 5 6 3 5