We collect staggering amounts of information every day. A chart is how you turn a spreadsheet into a story — a picture that a stakeholder can read in three seconds without needing a meeting. Here are the five picture stories every business should know by heart.
1. Bar chart
Rectangular bars, vertical or horizontal, length mapped to value. It's the champion of category comparison. If you want to know which product sold most last month, or which city generated the most support tickets, bars answer instantly.
2. Line chart
Data points connected over time. Line charts are how you show trends — revenue growth, churn, latency. Stack two or three lines on the same axis to compare series.
3. Pie / donut chart
Circular slices showing proportions of a whole. Donuts work when you have 2–5 categories that add to 100%: market share, budget split, traffic sources. Any more and a bar chart will outperform them.
4. Scatter plot
Dots on a 2D grid for two variables. Use them to spot correlations and outliers — advertising spend vs. sales revenue, website speed vs. bounce rate, height vs. weight in a sports analytics study.
5. Area chart
A line chart with the space below it shaded. Best for showing volume changes over time and for stacking multi-series comparisons — think e-commerce sales by product category over a year.
Five chart types will take you surprisingly far. Add one per dashboard, not five, and keep the one that earns its place.