Statistics

Feb 23, 2026
software-engineering

Data Science Foundations Chapter 12: How to Know if Your Model Actually Works

You built a model. It runs. It gives you numbers. But does it actually work? That is what Chapter 12 of “Data Science Foundations” by Stephen Mariadas and Ian Huke is about. Building a model is one thing. Trusting it is something else.

Feb 19, 2026
software-engineering

Data Science Foundations Chapter 9: Averages, Probability, and the Math You Actually Need

Math scares people. I get it. You hear “standard deviation” and suddenly you are back in high school staring at the board. But here’s the thing. Chapter 9 of Data Science Foundations by Stephen Mariadas and Ian Huke covers the math basics you actually need for data science. And none of it is that hard.

Statistics

Data Science Foundations Chapter 12: How to Know if Your Model Actually Works

Data Science Foundations Chapter 9: Averages, Probability, and the Math You Actually Need

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