A second difference is that quantitative researchers do not begin data analysis until they have collected all of the data and condensed them into numbers. They then manipulate the numbers in order to see patterns or relationships. Qualitative researchers can look for patterns or relationships, but they begin analysis early in a research project, while they are still collecting data. The results of early data analysis guide subsequent final stage of research than a dimension of research that stretches across all stages.
Another difference is the relation to social theory. Qualitative researchers manipulate numbers that represent empirical facts in order to test an abstract hypothesis with variable constructs. By contrast, Qualitative researchers create new concepts and theory by blending together empirical evidence and abstract concepts. Instead of testing a hypothesis, a qualitative analyst may illustrate or color in evidence showing that a theory, generalization, or interpretation is plausible.