Why do we visualize our data?
So often end-users will ask for a table, not unlike Excel (which they may be more familiar with), with summarized data.
French statistician Francis Anscombe created four datasets to show why we should first visualize information before analyzing it.
The four datasets he created all have 11 x and y coordinates and all show the same summary statistics.
And thus when only compared on those merits would be deemed the same.
But when plotted we see how very different the datasets really are
This is one of the reasons why we visualize data, to show the pattern within the data before we summarize and draw conclusions.
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Header image from: Andy Kriebel (@VizWizBI). Screenshots from author.