STAT 100 Chapter 1: Chapter 1.docx
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STAT 100 Full Course Notes
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Can take different values for different individuals: not all are numerical, some are categorical and simply place individual into one of several groups or categories, bad judgement on choosing variables (cid:224) data that costs lots of time and money but don"t shed light on the world, response variable that measures an outcome or result of a study, observational study observes individuals and measures variables of interest but does not intervene in order to influence the responses, purpose is to describe some group or situation.