# Moments of a Random Variable Explained

Why is Variance related to X squared? To understand this we need to understand Moments of a Random Variable. Read on to learn about the relationship between Variance, Moments of a Random Variable and Jensen's inequality.

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# Expectation and Variance from High School to Grad School

Many people find the ideas of Expectation and Variance confusing. In part this is because the way we view these concepts changes as our understanding grows in sophistication. In this post we'll look at the way these definitions change from their basic High School intro to the view of Rigorous Probability Theory.

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# Understanding Variance, Covariance, and Correlation

An explanation of Variance, Covariance and Correlation in rigorous yet clear terms providing a more general and intuitive look at these essential concepts.

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# Random Variables and Expectation with Robots and Stuff!

In this post we look at Expectation and Variance in simple terms, but through a more sophistcated lens. It turns out that "advanced" definitions of these terms are also easier to understand and work with.

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