1.) Twenty pairs of measurements were taken at random to estimate the relation between variables X and Y. A least-squares line was fitted to the collected data. The resulting residual plot is shown.

14 12 10 8 Almond Milk 6 4 2 0 O 1 2 3 4 5 6 7 8 Cow Milk600 400 200 Residuals 0 50 100 150 200 -200 -400 -600 X