Probability Tables (VCE SSCE Mathematical Methods): Flashcards

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Probability Tables
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Probability table definition

Tabular method for representing probability problems

Alternative name for probability tables

Karnaugh maps

Regions created by two intersecting sets

Four distinct, non-overlapping regions

What joint probabilities represent

Probability of two events occurring together

What marginal probabilities represent

Probability of a single event

Location of joint probabilities in table

In the main cells

Location of marginal probabilities in table

In the row and column totals

Pr(AB)+Pr(AB)\Pr(A \cap B) + \Pr(A \cap B') equals

Pr(A)\Pr(A)

Pr(A)+Pr(A)\Pr(A) + \Pr(A') equals

1

Formula for Pr(AB)\Pr(A \cup B)

Pr(A)+Pr(B)Pr(AB)\Pr(A) + \Pr(B) - \Pr(A \cap B)

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