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Conditional Probability — Introduction to Probability, Statistics and Random Processes

by Hossein Pishro-Nik · University of Massachusetts Amherst

The conditional-probability chapter of a free full-text university textbook, covering the definition, chain rule, law of total probability, Bayes' rule, and independence, each followed by a bank of fully worked solved problems for self-testing.

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Interactive D3 visualisations from a Brown University project. Dragging events across a sample space shows conditioning shrinking and rescaling it in real time, giving a geometric picture of P(A|B), joint events, and independence.

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