STAT 1450 Lecture Notes - Lecture 9: Abdominal Pain, Shingles, Confounding
17 Sep 2020
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Connecting chapter 9 to our current knowledge of statistics. Chapter 8 focused on data collection through sampling. There were two primary classes of sampling: scientific and non-scientific. But, ultimately, we collected data via __________________ and analyzed the responses. We will now collect data without using questioning techniques. An _________________________ focuses on individuals and measures variables of interest but does not attempt to influence the responses. Data is collected to better describe a group or situation. There is __________________________ being impressed upon the individuals. _______________________________ on individuals in order to observe their responses. Two variables (explanatory variables or lurking variables) are ____________ when their effects on a response variable cannot be distinguished from each other. Observational studies are ____________________ showing _________________ because of confounding: confounding can happen in experiments, but ideally the researcher designs the experiment to avoid confounding. The ______________ studied in an experiment are often called ___________, particularly when they are people.
