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Independent & Dependent Events

Section: Statistics & ProbabilityBank code: STA-IDEGRE frequency: MediumPro

1. Core Idea

  • Independent: the outcome of one event does not change the probability of the other. Tossing a coin twice.
  • Dependent: the first outcome changes the second's probability. Drawing two cards without replacement.

The diagnostic question: "After the first event happens, has the pool changed?" If yes, dependent.


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