If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

In this video, we create three Wall Street Journal charts and visuals in Excel, showcasing the high-quality visuals for which ...

We’ve all been there, a crucial presentation is coming up, and your important data looks flat and uninspiring. How do you make your numbers stand out and tell a story in your next presentation? The ...

Back in 2004, data visualization guru posted an article on his website about small intense charts that he dubbed sparklines. The idea is to fit a lot of data points into a chart that is about the same ...

A quick Excel routine clears visual noise, improves spacing, and locks in a reusable chart template.