定性定量（Qualitative and quantitative）.docVIP

定性定量（Qualitative and quantitative） Qualitative research method medical aircraft Qualitative research method is based on social phenomena or things have attributes and contradictions in the movement of change, from the inherent nature of things to study a method or angle of things. Edit this paragraph briefly It is based on the universally accepted axioms, a set of deductive logic and a large number of historical facts, and describes and interprets the research from the contradiction of things. Qualitative research should be based on a certain theory and experience, and directly grasp the main aspects of things characteristics, the number of homogeneity in the difference between the temporary omission. Edit the paragraph hierarchy Qualitative research has two different levels, one is not pure or lack of qualitative research, quantitative analysis, the conclusion is often the generality and thick speculation; two is a higher level of qualitative research based on quantitative analysis. In practice, qualitative research and quantitative research are often used together. Before a quantitative study, researchers must use qualitative research to study the nature of the phenomenon is identified; in the quantitative study, researchers must limit by means of qualitative research to determine the qualitative change phenomenon and qualitative change reason. Edit this paragraph compare Study and analysis Qualitative analysis Objective: to obtain a qualitative understanding of potential reasons and motivations Sample: a small sample of non representative cases Data collection: Unstructured Data analysis: a non statistical approach Results: get a preliminary understanding Quantitative research analysis Objective: to quantify the data and to generalize the results from the sample to the overall population under study Sample: a large sample consisting of representative cases Data collection: Structured Data analysis: a statistical approach Results: suggest the final course of actio