A sample of 400 Regina households is selected and several variables are recorded. Which ofthe following statements is correct?
a) Total household income (in $) is interval level data.
b) Socioeconomic status (recorded as "low income", "middle income", or "high income"is nominal level data.
c) The number of people living in a household is a discrete variable.
d) The primary language spoken in the household is ordinal level data.
e) None of the above.