How powerful charts can boost your career
An American accountant managed – as the youngest ever! – to win a crucial election in Los Angeles – thanks to the power of data visualization.
Kenneth Mejia, a 32-year-old accountant of Filipino descent, is very committed to issues of poverty, affordable housing and mobility. In the 2022 elections he ran for “City Controller”, a sort of treasurer, for his hometown of Los Angeles. It’s a department with responsibilities almost as big as those of the city’s mayor and chief justice. For example, the City Controller can commission audits to evaluate the effectiveness of city departments.
Data visualization as election propaganda
Kenneth took a remarkably creative and unusual approach in the run-up to the election: he made imported data about the city instantly accessible and visible. On his campaign website, for example, he created a whole series of interactive maps, reports and searchable databases. He even put up billboards showing with graphs what the anticipated city budget will be used for in 2022-2023.
That transparent communication did not miss its mark. Kenneth won, as the youngest city controller ever. This approach shows how powerful data visualization is to unlock information, which may seem difficult and unfathomable to the general public, in a very accessible way. As a result, citizens not only gain insight but also become more engaged in politics. They become better informed and can vote more knowledgeably.
You too can make a difference thanks to powerful data visualization
Whether you have political ambitions, want to present your scientific research comprehensibly or convince your management of your brilliant ideas… Would you also like to learn how to create powerful graphics that can inform, convince and engage your audience? Charts that not only accurately represent the numbers, but also have a clear message and are attractive to look at?
In the book “Powerful Charts” physicist and Baryon founder Koen Van den Eeckhout explains in an accessible and practical way how this can be done. An indispensable guide for anyone who communicates with and about figures.
This brand new book is available now at Owl Press.
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Making a data visual noise-free
Removing noise from a data visual is not only about taking things away such as gridlines, axes or legends. That’s just one part of it, which we could call removing physical noise. Improving the signal-to-noise ratio is often also about adding little things that help our audience better understand the visual. We are helping them by removing mental noise, or mental barriers.
Three tips to create powerful charts in Excel
Creating charts in Excel can be a very powerful tool for making sense of complex data sets, and for visualizing them. But the default options are not always the most pretty or effective ones. Here are our top three tips to create better Excel charts.
A powerful chart has a high signal-to-noise ratio
‘Less is more’. It’s a crucial principle in most of our communication, and in data visualization in particular. Because of my background as a physicist, I prefer to talk about the ‘signal-to-noise ratio’. The message - our signal - should be amplified as much as possible, giving it all of the attention. Everything that can distract from our message - the noise - should be removed.
A powerful chart tells a story
A powerful chart has a clear message. It should be short and meaningful, and obvious in the blink of an eye. If there’s only one thing our audience remembers at the end of the day, this should be it.
Navigating the landscape of powerful charts
Once we’ve decided to create a data visual or infographic, there are a lot of questions we should ask ourselves to determine the most suitable format. These considerations could include size, readability, possible interactive functionality, and the level of detail we need.
Why is data visualization so challenging?
Data visualization is very powerful, but it can also be hard. That’s because a great data visual combines three different aspects simultaneously: clarity, correctness, and beauty.
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