Download and examine the U.S. Census Bureau's 2007 Survey of Business Owners and Self-Employed Persons, directly available

Question:

Download and examine the U.S. Census Bureau's "2007 Survey of Business Owners and Self-Employed Persons," directly available at bhs.econ.census.gov/BHS/SBO/ sbo1_07.pdf or through the Get Help with Your Form link at www.census.gov/econ/sbo.
a. Give an example of a categorical variable included in the survey.
b. Give an example of a numerical variable included in the survey.