CHAPTER 11: Producing Data— Part II Review

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Presentation transcript:

CHAPTER 11: Producing Data— Part II Review Basic Practice of Statistics - 3rd Edition CHAPTER 11: Producing Data— Part II Review Basic Practice of Statistics 7th Edition Lecture PowerPoint Slides Chapter 5

Part II Summary Sampling Experiments Data Ethics*

Sampling Identify the population in a sampling situation. Recognize bias due to voluntary response samples and other inferior sampling methods. Use software or Table B of random digits to select a simple random sample (SRS) from a population. Recognize the presence of undercoverage and nonresponse as sources of error in a sample survey. Recognize the effect of the wording of questions on the responses. Use random digits to select a stratified random sample from a population when the strata are identified.

Experiments (part I) Recognize whether a study is an observational study or an experiment. Recognize bias due to confounding of explanatory variables with lurking variables in either an observational study or an experiment. Identify the factors (explanatory variables), treatments, response variables, and individuals or subjects in an experiment. Outline the design of a completely randomized experiment using a diagram. The diagram in a specific case should show the sizes of the groups, the specific treatments, and the response variable.

Experiments (part II) Use software or Table B of random digits to carry out the random assignment of subjects to groups in a completely randomized experiment. Recognize the placebo effect. Recognize when the double-blind technique should be used. Explain why randomized comparative experiments can give good evidence for cause- and-effect relationships.

Data Ethics* (Not required for later chapters) Understand the purpose of institutional review boards. Understand what informed consent means. Explain the difference between confidentiality and anonymity in research studies.