1. Fun… Tree Diagrams…
Probability

2. Make me a tree diagram…
Flip a coin. Flip the coin again.. Flip the coin again… So flip the coin three times.
What is the probability I flip 2 heads and 1 tail?
What is the probability I flip 3 tails?

3. Make me a tree diagram…
Roll a dice. Roll a dice again… So roll the dice twice. 1 2 3 4 5 6
We need to find the totals!!!

4. Rolling Two Dice
Roll Total
Occurrence 2 3 4 5 6 7 8 9 10 11 12

5. Find the Probability Probability of rolling a total of 7 or greater
of something less than 7
Roll Total
Occurrence 2 1 3 4 5 6 7 8 9 10 11 12

6. Craps… Using Probability in dice games… Roll (2,3,12) Lose!
Roll (7, 11) Win!
Roll (4, 5, 6, 8, 9, 10) Keep rolling until you get your number (Roll a seven you lose)

7. Let’s find the probability
On the first roll you win (roll: 7, 11)
On the first roll you lose
(roll: 2, 3, 12)
On the first roll you have to
roll again
Roll Total
Occurrence 2 1 3 4 5 6 7 8 9 10 11 12