Why this chapter matters
Clear plots help teams see performance changes quickly and reduce misinterpretation in KPI discussions.
What you will learn
- Choose chart types that match trend or comparison questions.
- Label axes, units, legends, and titles clearly.
- Export figures with reproducible size and layout settings.
Lessons in this chapter
- Line charts for trendsPlot ordered time-series values correctly.
- Bar charts for categoriesCompare grouped values without visual distortion.
- Chart annotationAdd targets and notes that explain gaps and outliers.
- Guide: data visualizationTurn summary tables into report-ready visuals. Read the full guide →
Study task
Plot weekly revenue with a target line, then create a bar chart for current-week revenue by channel.
Chapter checkpoint
Why must time values be sorted before line plotting?
Unsorted time points can create misleading line paths and hide actual trend direction.