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Everything about Expected value

Average value of a random variable

In probability theory, the expected value is a generalization of the weighted average. Provided that it is finite, the expected value can be interpreted as the long-run average of results from independent repetitions of the same random experiment, as formalized by the law of large numbers. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Expected valueA 5-minute orientation
  2. Skim a recent paper: Expected goals in football: Improving model performance and demonstrating valueInfluential work since 2022
  3. Pick up a classic book: Medical selection of life risksThe most-reprinted book on the subject
  4. Read the landmark paper: On the Relation between the Expected Value and the Volatility of the Nominal Excess Return on StocksCited 11,554 times
  5. Go sideways: Fatou's lemmaA closely related topic
  6. Go sideways: Jensen's inequalityA closely related topic

📖 Definitions

Noun The weighted average of outcome values, using probability as the weighting function.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics