STAB22H3 Chapter Notes - Chapter 2-30: Statistical Hypothesis Testing, Logistic Regression, The Bs

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STAB22H3 Full Course Notes
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STAB22H3 Full Course Notes
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Course: data analysis, book: stats: data and models (richard d. de veaux) third edition. Data does not have to be numerical. Sometimes values look like numerical values but are just numerals servings as labels (e. g. amazon standard item number) Data values are useless without their context. The w"s: who what (essential) (and in what units) when where why how -> context for data values. The rows of a data table correspond to individual cases about whom (or which) we record some characteristics. Experimental units - like subjects but animals, plants, websites and other inanimate subjects. Respondents individuals who answer a survey. Cases are often a sample of cases selected from some larger population that we"d like to understand. Sample should be representative of the population (snapshot image) Variables characteristics recorded about each individual (usually columns) Variables play different roles, and you can"t tell a variable"s role just by looking at it.

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