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Know your problem
Know your data
Visualise your data
Work with your chart
Check yourself
19. Variables, encoding, and descriptions


We have created a meaningful chart for our data. Starting with one raw variable, working through transformations and calculations, we finally visualized the data on a bar chart. We should always be aware of what data is now mapped on our chart and how is described.

We've also discovered how important it is to present our chart in a clear and professional way. With a good title, an uncluttered presentation, and the proper use of color, we've made sure anyone can understand this chart!

Before we move on, let's have a quick quiz. How well can you identify variables, encoding (display techniques) and descriptions?

Example Graph