Determine whether the following possible responses should be classified as interval, nominal or ordinal data.
Ordinal
1. What grade did you receive in Statistics last semester; A, B, C, D, or F?
Nominal
2. How many escorted vacations have your taken prior to this one?
Ordinal
3. Would your overall rating of this tour be excellent, good, fair, or poor?
Nominal
4. What is the maximum number of hours per day that you would like to spend travelling?