A random sample of 500 households in Vancouver was selected and several variables are recorded for each household. Which of the following is NOT CORRECT? (a) Household total income is a ratio scaled variable. (b) Household income (which averages about $35,000) and was rounded to the nearest $100 can be treated as a continuous variable even though it is “discrete”. (c) Socioeconomic status was coded as 1=low income, 2=middle income, 3=high income and is an interval scaled variable. (d) The primary language used at home is a nominal scaled variable. (e) The number of persons in the household is a discrete variable.