Data science is expanding rapidly but most practitioners skip the basics.

Cassie Kozyrkov (formerly Google’s Chief Decision Scientist) previously shared 32 foundational questions that every data scientist should answer.

I got bored and distilled this into the 10 most helpful questions.

Each question offers multiple valid perspectives ⬇️ **

1/ Start with epistemology.

“What does it mean to know something?”

In data science, do we “know” something when our model predicts it? When p < 0.05? When we have correlations? **

2/ Next: “How do you know that you know?”

For example, if a model has 95% accuracy, what does this really mean? **

3/ Look into critical distinctions:

“What’s the difference between knowledge, truth, assumptions, opinions, and beliefs?” **

4/ The trust equatio…

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