Game performance of water polo players. Refer to the Biology of Sport (Vol. 31, 2014...

Game performance of water polo players. Refer to the Biology of Sport (Vol. 31, 2014) study of the physiological performance of top-level water polo players, Exercise 9.24 (p. 513). Two variables were measured for each of eight Olympic male water polo players during competition: mean heart rate over the four quarters of the game (expressed as a percentage of maximum heart rate) and maximal oxygen uptake (VO₂max). Simulated data are shown in the accompanying table. Spearman’s rank correlation between the two variables is shown in the accompanying SAS printout.

Reference: Exercise 9.24

a. Give the equation of the least squares line.

b. Give a practical interpretation (if possible) of the y-intercept of the line.

c. Give a practical interpretation (if possible) of the slope of the line.