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Final

Week 5 Study Notes


Department
Geography
Course Code
GGR270H1
Professor
Damian Dupuy
Study Guide
Final

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GGR 270 โ€“ Lecture 5 โ€“ October 13, 2010
Probability
๎€Studying spatial patterns is a key concern of geographers
oTry to understand what has led to these patterns
๎€Geography is about describing, explaining, and predicting geographic patterns and
processes
๎€Use probability for situations when patterns have some degree of uncertainty
oEx: weather ๎€ P.O.P
๎€Probability focuses on the occurrence of an event
oWhere one of several outcomes could result
oOutcomes are (and must be) mutually exclusive
๎€Can be thought of as frequency of an event occurring relative to all other outcomes
P(A) = F(A) / F(E) where...
๎€P(A) = Probability of outcome A occurring
๎€F(A) = Absolute frequency of A
๎€F(E) = Frequency of all other outcomes
Rules
๎€Max probability of an outcome is 1.0
oAll probabilities must add up to 1
๎€Addition rule:
oUsed when finding probability of single independent events
๎€‚P (A or B) = P(A) + P(B)
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