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Lesson 8 of 20 · about 15 min

Expected value

Should you pay $4 to play a dice game? Expected value answers it, and it's literally a balance point. You'll balance a seesaw of probabilities, discover why casinos always win in the long run, and use the most useful shortcut in probability, linearity of expectation, to solve a puzzle that looks impossible.

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In this lesson you'll learn:

  • Expected value E[X]
  • Linearity of expectation

Free to try in F07 Probability & Statistics:

The first 3 lessons of every course are free, no account needed.