The serialization of my book, Test-Driven Data Analysis, has reached chapter 4, which is available online at

https://book.tdda.info/book/chapter4.html

There is nothing more important than looking at data, and this chapter discusses how to construct a good combined profile and audit for each field in a dataset. Profiling shows the shape of the data, and auditing shows gaps, outliers etc.

Profiles for every field in a few datasets are also available in various forms at

https://book.tdda.info/profiles/

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