STAT 3090- Midterm Exam Guide - Comprehensive Notes for the exam ( 39 pages long!)
5 Oct 2017
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Chapter 2 data, reality and problem solving. Does cigarette smoking cause cancer? to answer this question was to conduct a controlled experiment in which the variable of interest, smoking, was the only difference between an experimental group and a control group. We could argue that the whole experiment could be avoided by just comparing be conducted. the cancer levels among individuals of a certain age who smoke to those of the same age who do not smoke. More complex statistical methods are required to healthy habits thus affecting the cancer rates? draw associations in these types of situations. Cause and effect cannot be determined but an association may be present. Correspond to the data you are observing. And a response explanatory-response relationship is measured. Determine whether each of the following describes an observational study or an experiment. At the end of flu season, the proportion of participants in each treatment group who contracted the flu is compared.
