Friday, May 1, 2009

May 2, 2009 - Final Project Outline (optional)

For those of you interested in working on a final project, the following is an example outline . The final project must be in a "PowerPoint" or MS Word format.

Steps in Statistical Stud<span style="font-weight: bold;">Des</span> Project Outline (a guide)

I. Identifying the "subject" of your study

  • What is the question? (What are my hypotheses?)- 1 slide
  • Is the data obtainable? (birth weight, socio economic, drugs, alcohol)- 1 slide
  • Is it ethical to obtain such data?
  • If not, is there a reasonable substitute?
  • Are the assumptions reasonable?- 1 slide
II. Designing
  • Identify the population of interest- 1 slide
  • Survey- several slides (how would you design the survey, you do not have to actually do the survey) * * * although, for extra credit (5 points) you can do a survey
    • Obtain a representative sample of that population- 1 slide
      • Simple Random Sampling
      • Stratified Sampling (M-F, Age groups)
      • Systematic Sampling (class roster, census list)
      • Multi-Stage Sampling
    • Sources of Bias- 1-2 slides
      • Voluntary Response
      • Non-response bias (day phone)
      • Response bias (people lie)
      • Undercoverage
  • Observational Studies- 1-3 slides
    • Used when a designed experiment is not ethical
    • Subjects studied over a period of time in natural setting
    • Case/Control – Control must match
    • Record Variables of interest
    • Confounding is a major issue
  • Designing an Experiment1-5 slides
    • Researcher has control over the subjects or units in the study
    • An intervention takes place that otherwise would not occur
    • Randomization used to assign treatments
    • Strongest case for causality
  • EDA – Exploratory Data Analysis (trends, relationships, differences) - optional, 1 slide
  • Pilot Study
III. Collecting Data 1-3 slides
  • Identify variables
  • Identify types of variables
    • Qualitative
    • Quantitative
  • Identify Limits of measurement or observation
IV. Analyze the data 1-3 slides
  • Use proper procedures and techniques.
  • Check the assumptions behind the procedures and techniques.
V. Make Conclusions and Discuss Limitations 1-3 slides
  • What are the answers to the original hypotheses?
  • What are the limitations of the study?
  • What conclusions does the study not make?
  • What new questions arise from this study?

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