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• 23:53, 18 March 2024 Rice talk contribs created page Summary Statistics (Created page with "When we investigate a variable in a dataset, two things are great at ''summarizing'' the dataset: the ''center'' and the ''spread''. = Measuring Center = There are two ways to measure center: the mean and the median. == Mean == The '''mean''' is the average/expected value of a variable. The sample mean is denoted as <math>\bar{X}</math>, whereas the population mean is denoted as <math>\mu_X</math>. <math> \bar{X} = \frac{1}{n} \sum x_i </ma...")