Focus on the second half of Chapter 1. 1. Skim the steps in the research process. Much research in the social sciences involving surveys and experiments focus on variables. Define variable . Okay, then explain how control variables play a role in the relationship between an independent and dependent variable.
Variables can assume different characteristics, and thus their measurement is treated differently.
What is the difference between nominal, ordinal, interval and ratio levels of measurement. Give at least one example of each.