Bayes’ Theorem: The Holy Grail of Data Science

Intuitive derivation of the Bayes’ Theorem

Artem Oppermann
Towards Data Science
8 min readDec 22, 2018

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updated on 06/26/2023

Bayes’ Theorem is perhaps the most important theorem in the field of mathematical statistics and probability theory. For this reason, the theorem finds its use very often in the field of data science.
In this article, I am going to use a practical problem to intuitively derive the Bayes’ Theorem.

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