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Selecting Appropriate Statistical Procedures

報告者：許之馨 授課老師：任維廉 教授. Selecting Appropriate Statistical Procedures. Introduction Decision-tree model Decision-tree flowcharts Major characteristics of the study Selecting appropriate descriptive and inferential statistics Secondary analyses Caveats and disclaimers Summary. Outline.

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Selecting Appropriate Statistical Procedures

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  1. 報告者：許之馨 授課老師：任維廉 教授 Selecting Appropriate Statistical Procedures

  2. Introduction • Decision-tree model • Decision-tree flowcharts • Major characteristics of the study • Selecting appropriate descriptive and inferential statistics • Secondary analyses • Caveats and disclaimers • Summary Outline

  3. Research is a systematic process of inquiry. Determine exactly what statistical procedures to use in analyzing the results in design phase. Characteristics of the research determine what statistical procedures to use. Introduction

  4. Organize the process of systematically determining appropriate statistical procedures. Decision-tree model is organized in five decision-tree flowcharts. Decision-Tree Model(1/2)

  5. The procedures for determining an appropriate statistical analysis • Describe the study. • Identify the study’s major characteristics. • Make systematic decisions, but now using the flowcharts. Decision-Tree Model(2/2)

  6. Decision-Tree Flowcharts(1/5)

  7. Decision-Tree Flowcharts(2/5)

  8. Decision-Tree Flowcharts(3/5)

  9. Decision-Tree Flowcharts(4/5)

  10. Decision-Tree Flowcharts(5/5)

  11. Level of constraint? • Independent variables? • Levels of the independent variables? • Type of design? • Dependent variables • what they are • how they are measured • levels of measurement • type of data for each Major Characteristics of the Study(1/2)

  12. Research hypotheses? What kind of test is needed? Major Characteristics of the Study(2/2)

  13. Descriptive Statistics using statistic to describe the characteristics of the data • Inferential Statistics according to sample infer the characteristics of the population Selecting Appropriate Descriptive and Inferential Statistics(1/2)

  14. Different type of data use different flowchart. If studyhas more than one research hypotheses, we would find the correct descriptive and inferential statistics for all dependent measures. Selecting Appropriate Descriptive and Inferential Statistics(2/2)

  15. After completing descriptive and inferential analyses. • Categories • Post hoc analyses • Secondary analyses to help explain results • Data snooping Secondary Analyses

  16. Inferential statistics portion there are other kinds of questions not covered by the set of flowchart. • The statistical procedures suggested by the flowcharts are not only appropriate procedures for answering a specific question. Caveats and Disclaimers

  17. Selecting an appropriate statistical procedure is often one of the most confusing steps in the research process for beginning students. A flowchart system is presented that organizes for students a process of selecting an appropriate statistical procedures. Summary

  18. Thanks for your attention Q&A

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