Knowledge Organiser for A2 Probability. Includes notes on Venn Diagram, Two-way tables and Probability Trees as well as an example question. Complete set of Venn Diagrams. Based on WJEC exam board but can be applied to any questions.
Venn dioarans
AuoionG
Qxampu queohion6(Q-it ygusal waec kebu)
mutiplicaion law P(a)=o3 Pe)=os P(AUE)=o
P(AnB)= P() xPB) as Shos eventsA anod B ac not IndeperdRNG
used ko oat number af otcomes So as to k probaaiiey maklemaiol representaion nts th are randem in nalure ü) Vennaingam
calcuse
P(AlvB)= o$to-l+o-4 = O-$
C-takes camisong Gacn brancn<= wihouto ouing
C P-tueo A P(AUR)= P()tP(S)-
B' Probobiiby A gien B oret? P(4NB)
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