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Museion Original · Arithmetic

developing · Ages 12+ · fraction foundations

Probability as Evidence

Name the reference group before trusting a probability claim.

Start the path 3 lessons · about 55 minutes
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Three connected investigations

  1. 01Probability as Evidence: Name the Possible OutcomesBuild a probability claim from a stated sample space, then check what the denominator is counting.Open
  2. 02Probability as Evidence: Condition on What You KnowUse a stated subgroup as the denominator when evidence tells you where to look.Open
  3. 03Probability as Evidence: Keep the Base Rate VisibleUse a full count table to distinguish a starting rate, a test result, and the evidence-conditioned conclusion.Open

What this path asks you to reason about

  • State the finite sample space before forming a probability.
  • Use the supplied evidence subgroup without reversing the condition.
  • Separate a base rate, a signal, and the conclusion supported after that signal.