Chpt 2: Displaying Data Flashcards
What are the two types of data analysis?
Exploratory, which aims to find the story of the data
Explanatory, which aims to share the story of the data
What are the four rules for making a good plot?
- Show the data
- Make patterns easy to see
- Display magnitudes honestly
- Draw graphics clearly
What types of graphs should be used for one categorical variable?
Bar plots and tables
What types of graphs should be used for one numerical variable?
Histograms, density plots, and cumulative frequency distributions
What types of graphs should be used for two categorical variables?
Bar plots, contingency tables, and mosaic plots
What types of graphs should be used for one numerical variable and one categorical variable?
Multiple histograms, strip charts, and box plots
What types of graphs should be used for two numerical variables and beyond?
Scatter plots and small multiples
What are the different shapes a histogram can take?
Bell shaped, bimodal, skewed, and uniform