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Producing Data Chapter 5

Producing Data Chapter 5. Research Methods. What You’ll Learn. What a research question should be Types of studies Difference between population and sample. Gathering Data. We have learned how to use exploratory data analysis to display and summarize both univariate and bivariate data.

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Producing Data Chapter 5

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  1. Producing DataChapter 5 Research Methods

  2. What You’ll Learn • What a research question should be • Types of studies • Difference between population and sample

  3. Gathering Data • We have learned how to use exploratory data analysis to display and summarize both univariate and bivariate data. • So where does this data come from? • How do we collect it in a meaningful way? • Are there different purposes for using data?

  4. Research Questions • Must be Researchable • No value questions • Significance • Must add to a body of knowledge • Must be defensible • Must have some worthiness • Feasibility • Must be able to collect and analyze the data necessary to answer the question • Must consider the cost

  5. Research Question • Ethical • Must do no harm to participants • Must have informed consent of the participants • Must maintain confidentiality • Clarity • The question must be clearly presented • All key terms must be defined

  6. Types of Studies • We will look at 2 basic types of studies. • Observational Study • No active intervention on the part of the researcher • Researcher simply observes the participants and records observations • Experiment • Researcher imposes some treatment or active intervention

  7. Population vs Sample • Population: • Group of individuals that we are interested in learning about • Dynamic (ever-changing) • Very difficult and expensive to take data on an entire population • Sample: • Group of individuals from the population of interest that we gather data on

  8. Additional Resources • The Practice of Statistics—YMM • Pg 245-247 • The Practice of Statistics—YMS • Pg 268-270 • Against All Odds—Video #12 • http://www.learner.org/resources/series65.html

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