Write a 1- to 2-page summary and include the following:

• A description of what the each of the variables measure.
• A description of the unit of analysis.
• A description and explanation of the levels of measurement for each variable (i.e., nominal, ordinal, interval, ratio).
• Explain how you might conceive these variables to be used to answer a social change question. What might be the implications for social change?

Support your summary using appropriate scholarly citations and references. Use proper APA format.