Basic Probability (AQA A-Level Mathematics): Flashcards

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Venn Diagrams
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What do Venn diagrams represent?

Relationships between different sets of data

What does each circle represent in a Venn diagram?

A set (with elements inside the circle)

What is the intersection in a Venn diagram?

Area where circles overlap (common elements)

What is the union in a Venn diagram?

Area covered by all circles combined

What is the complement in a Venn diagram?

Area outside a circle (elements not in that set)

Notation for union of sets A and B

ABA \cup B

Notation for intersection of A and B

ABA \cap B

Notation for complement of set A

AA'

Formula for conditional probability P(AB)P(A|B)

P(AB)P(B)\frac{P(A \cap B)}{P(B)}

Three uses of Venn diagrams

Probability, set theory, logic and reasoning

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