How do sampling methods and sample sizes differ between quantitative and qualitative research? What sampling method would you use to conduct your study based on your research questions (qualitative and quantitative)? Why? How would you choose the type and size of sample? A sampling method is defined as “the process of selecting a group of people, events, behaviors, or other elements that represent the population being studied” (Stillwell, Fineout-Overholt, Melnyk, & Williamson, 2010, p. 336).