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### Two-Variable Categorical Data

 Intro to types of variables: numerical (quantitative) or categorical (qualitative):Explanation:Khan video: Individuals, variables, and categorical & quantitative dataPractice Problems:Khan exercise: Individuals, variables, and categorical & quantitative data4.2.1 Creating and Interpreting Frequency Distribution Explanation: Khan video: Khan Article: Two-way frequency tablesArticle: Over 40 Million People Are Enslaved WorldwideSurvey: https://www.isidewith.com/political-quiz#http://www.rasmussenreports.com/http://www.pewresearch.org/topics/polling/Video on visualizing numbers: The Fallen of World War II in war deaths on Vimeo (18:16) Practice Problems: Khan Exercise: Read two-way frequency tables Khan Exercise: Create two-way frequency tables (you may want to make your own table with the totals in the margins) Worksheet 4.2.2 Relative Frequency Distribution Explanation: ExerciseKhan exercise: Marginal distributionsWorksheet  4.2.3 Conditional Relative Frequency Distribution Explanation:Khan video: Two-way relative frequency tables (he calls it a column relative frequency instead of a relative conditional) Khan article: Two-way relative frequency tables and associationsKhan article: Conditional distributions and relationshipsKhan video: Marginal and conditional distributionsArticle: Distribution of professional athletes Exercise: Khan exercise: Create two-way relative frequency tablesKhan exercise: Reading two-way relative frequency tablesKhan exercise: Interpreting two-way tablesKhan exercise: Conditional distributionsWorksheet 4.2.4 Drawing Conclusions from Data Review WS#1Cumulative Review WS #6 Vocabulary Review