All (Line) Charts are Wrong, But Some Are Useful

Line charts are one of the most common and useful charts out there. But why draw straight lines between the data points? They almost never represent what the data is actually doing, no matter if the data is single observations or aggregated over time. How do line charts actually work, and what do they imply about the data?

Stop wasting money and make stakeholders happy with everyday storytelling, by Ryan Bigge

Continuous Values and Baselines

Paper: The Connected Scatterplot for Presenting Paired Time Series

Linear vs. Quadratic Change

what is a line graph, how does a line graph work, and what is the best way to use a line graph? — storytelling with data

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What Is A Misleading Chart?

Understanding Pie Charts

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Chad Skelton: Bar charts should always start at zero. But what about line charts?