9/13/2021

Summarizing Categorical Variables (with data from Data Survey - Open CategoricalSummaries.R)

• Example - Which hospital is best?
• Frequency Tables with Tally
• Bar graphs and stacked bar graphs with R
• Different ways of summarizing categorical information
  • Contingency Tables
  • Relative Frequency Tables
  • Marginal Distributions
  • Conditional Distributions

Class Exercises

The responses from our Day 1 Survey (Google Form) can be found in the file Google Drive\Stat106-ElementsofStatistics-F2021\!ClassMaterial\\ClassDataF21.csv. Use this file for the exercises below.

1. Are the students in Elements of Statistics evenly split with respect to Cats or Dogs?
2. Is the distribution of students evenly spread across all four years of current students?
3. Do you think there is a relationship between Section and Handedness? Explain.
4. Do you think there is a relationship between Section and Cats or Dogs? Explain.

Please read Sections 2.3 and 3.1 for class on Wednesday.