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Quick Math Intuitions

Sharing quick intuitions for math ideas

Category: Probability

Probability as a measure of ignorance

Stefano Ottolenghi2019-05-112019-05-162

One of the most beautiful intuitions about probability measures came from Rovelli’s book, that took it in turn from Bruno de Finetti. What does a probability measure measure? Sure, the…

Conditional probability: why is it defined like that?

Stefano Ottolenghi2019-04-072019-05-100

So, you want to calculate the probability of an event knowing that another has happened. There is a formula for that, it is called conditional probability, but why is it…

On the meaning of hypothesis and p-value in statistical hypothesis testing

Stefano Ottolenghi2017-06-012017-07-220

Statistical hypothesis testing is really an interesting topic. I’ll just briefly sum up what statistical hypothesis testing is about, and what you do to test an hypothesis, but will assume…

Metaphysics on geometric distribution in probability theory

Stefano Ottolenghi2017-01-312017-01-310

I realized geometric distribution is not exactly about the time needed to get the first success in a given number of trials. This is a very odd feeling. It is…

Random variables: what are they and why are they needed?

Stefano Ottolenghi2016-11-242016-12-060

This article aims at providing some intuition for what random variables are and why random variables are useful and needed in probability theory. Intuition for random variables Informally speaking, random variables…

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