For the following cases, indicate the level of measurement—nominal, ordinal, interval, or ratio— for the data involved:
Variable
a. Movie ratings: G, PG, PG-13, R, X
b. Commuting distances
c. Floors in a building: basement, lobby, 1, 2, etc.
d. Years of education
e. Korean shoe sizes
f. College ID numbers
g. Income taxes owed
h. Military ranks: 2nd lieutenant, 1st lieutenant, captain, etc.
i. Academic degrees: associate, BS/BA, masters, etc.
j. Military time of day: 0600, 1830, etc.
k. Stock ratings: 1 f Strong Buy; 2 f Buy; 3 f Hold; 4 f Sell
I. PIN numbers
m. Temperatures on the absolute Kelvin scale