Answers to the checkpoints of chapter 3

Checkpoint 1 

• Dependent in the rows; independent in the columns.
• Student loan (= independent variable) in the column; holiday (= dependent variable) in the row.
• Row percentages, comparing by column.

Checkpoint 2

• Clustered box plot/bar chart.
• Multiple line chart, trend line.
• Stacked bar chart.
• Clustered bar chart
• Dot plot for experience (x-axis) and income (y-axis).