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STAT 206: Chapter 2 (Organizing and Visualizing Variables)  Methods to Organize and Visualize Variables  For Categorical Variables:  Summary Table; contingency table (2.1)  Bar chart, pie chart, Pareto chart, side-by-side bar chart (2.2)  For Numerical Variables  (Array), Ordered Array, frequency distribution, relative frequency distribution, percentage distribution, cumulative percentage distribution (2.3)  Stem-and-Leaf display, histogram, polygon, cumulative percentage polygon (2.4)  Other methods later…  2.1 Organizing Categorical Variables  Must identify variable type to determine the appropriate organization and visualization tools èRecall Variable Types  Categorical (Category) 