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Chart guides: how to choose and make the right chart.

Plain-English answers to the chart questions people actually search for, from bar graphs vs histograms to stacked vs grouped bars, with examples you can make yourself.

Chart comparisons

Bar graph vs histogram: what's the difference?Gaps, bins and why you should never sort a histogram. The differences that matter, with examples.
Chart vs graph: what's the difference?Every graph is a chart, but not every chart is a graph. A quick guide, with examples of each.
Grouped vs stacked bar charts: which should you use?Comparison or composition? Four questions that decide between clustered and stacked bars.

Bar charts

What is a segmented bar graph? Stacked bar charts explainedHow to read a segmented bar graph, when to switch to 100% stacked, and where it goes wrong.
Horizontal vs vertical bar charts: when to use eachLong labels, rankings and time periods: how to pick the right orientation every time.

Radar charts

Radar charts explained: spider charts, radial graphs and when to use themHow to read a radar diagram, when its shape tells the story, and when a bar chart does it better.