What is the level of measurement for each of the following variables?
a. Student IQ (intelligence quotient) ratings.
b. Distances students travel to class.
c. Student scores on the first statistics test.
d. A classification of students by province of birth.
e. A ranking of students by letter grades.
f. Number of hours students study per week.
g. The political parties in Canada.
h. Team standings in the National Hockey League (NHL).
i. Jersey numbers in basketball.
j. The number of car sales in the last six months.