Data Science Foundations: Know Your Data. Really, Really, Know It.

towardsdatascience.com

Know your data, where it comes from, what’s in it, what it means. It all starts from there.

If you haven't spent six months with a dataset, you probably aren't deeply familiar with it. How was it collected? What are the quirky business rules? Etc.

This is a rarely-discussed topic topic: it feels pedantic to tell someone that they should get to know their data better. But it is true. The first time you get to know a dataset on this level you will feel like a ballet dancer, lightly jumping from question to question with grace and mastery.

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