Marginal and Conditional Probabilities
What are the chances of choosing grape?
Def: Marginal Probability—the probability of a single event without consideration of any other event.
Def: Conditional Probability—the probability that an event will occur given that another event has already occurred.
--probability of A given that B has occurred
Compute with Class Grape Data
|
|
Row by Window |
Middle Row |
Row by Door |
Total |
|
Grape |
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|
|
|
|
Not Grape |
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|
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Total |
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P(middle row) = ?
P(not grape) = ?
P(not grape
middle row)
P(middle rownot grape)
**Worksheet**
**Monty’s Dilemma**