Determining Probabilities Using Tree Diagrams and Tables

Probability

• The likelihood or chance of an event occurring• Often shown as a fraction, decimal, or percent• A tree-diagram or table can be used to show

the possible outcomes• Independent events• The outcome of one event has no effect on

the outcome of the other event– Coin and spinner

Tree Diagram

• Example on the board• Sample Space – All possible outcomes of a

probability experiment• Probability (P) = # of favourable outcomes

total # of possible outcomes

Table

• See examples on board

Assignment

• Pg 416 – 417 # 3 – 10