- Minimum: start of the left whisker line
- First quartile (Q1): left-edge of the box
- Median (Q2): center line
- Third quartile (Q3): right edge of the box
- Maximum value: end of the right whisker line.

Boxplot charts are a versatile and efficient way to summarize and compare data across categories. Sometimes called a box and whiskers chart, each boxplot shows the distribution of the data in that category by charting its five-number summary:
