1. Which of the following variables are ranks? For those that are not ranks, give the units.
a) Student ratings of a course on a 5-point Likert scale.
b) Students' letter grades in that course.
c) Students' point scores on the final exam.
2. Which of the following variables are ranks? For those that are not ranks, give the units.
a) U.S. change by size: dime, penny, nickel, quarter, half dollar, dollar.
b) U.S. change by value: penny, nickel, dime, quarter, half dollar, dollar.
c) The change in your pocket by year minted.