1. Finding Probability Using Tree Diagrams and Outcome Tables
Grade 6 Math Unit on Probability

2. Re-cap... What is experimental probability?
What is theoretical probability?

3. What are Tree Diagrams
A way of showing the possibilities of two or more events
Simple diagram we use to calculate the probabilities of two or more events

4. Example: link to movie (only till first pause)

5. For example – a fair coin is flipped twice
1st
2nd H HH
Possible Outcomes H T HT H TH T T TT

6. Outcome Table
if you flip a coin twice, you can model also model the results with an outcome table
Flip 1
Flip 2
Simple
Event H HH T HT TH TT

7. Tree Diagrams – For flipping a coin
Probability of two or more events
Tree Diagrams – For flipping a coin
1st Throw
2nd Throw
OUTCOMES
P(Outcome)
H,H
P(H,H) =1/4=1/2x1/2
H,T
P(H,T) =1/4=1/2x1/2
T,H
P(T,H) =1/4=1/2x1/2
P(T,T) =1/4=1/2x1/2
T,T H H H H H T T T T T
1/2
1/2
1/2
1/2
1/2
1/2
1/2
Total=4 (2x2)
Total P(all outcomes) = 1

8. Calculate the percent of each outcome...