Question: Classify each of the following as nominal, ordinal, interval or ratio data.

a. The time required to produce each tire on an assembly line.

b. An employee’s ID number.

c. The ranking of four machines in your plant after they have been designated excellent, good, satisfactory or poor.

d. The telephone area code of clients in the United States.

e. The hourly temperature in Fahrenheit degrees of a grain dryer.