Clothes make the … Data

A few lessons are difficult for a data scientist to learn.

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“Don’t judge your data by the way it looks” is one of them.

If you feel pushed to argue that data is data and has no appearance to judge it by, then look at that data. What do you see?

These data show the distances between cities. For example, each row of the following table gives the length and surface area of a road between two cities.

By contrast, the following two matrices show either the respective roads’ lengths or surfaces.

Finally, the following figure depicts a graph that shows the cities as nodes and the roads as edges, labeled with the distance and surfaces.

Essentially, this is three times the same data. The only difference is in their representation; as I would like to emphasize, they come…