A sports economist conducted a study to determine the impact of a variety of variables on the salaries of rookie National Football League (NFL) players who were selected in the NFL draft. Specifically, the study included each player’s draft round (1 through 7), 40-yard dash speed, and position (such as quarterback, linebacker, etc.), the drafting team’s current payroll, the player’s power ratio (a measure of his weightlifting ability in pounds to his body weight), whether or not the team has a quality starter at the player’s position, and the player’s standing high jump (in inches). Classify each variable in this study as being quantitative or qualitative. Classify each quantitative variable as discrete or continuous.