1. Warm up
What is the probability of choosing a red card from a standard deck of cards?
What is the probability of choosing a king from a deck of cards?
Given that a card is black, what is the probability that you choose a 4?
50% 8%
2/26 = 8%

2. Review HW

3. Probability Tables

4. A Little Vocabulary Athletics Music/Arts SGA Other Total Male
Athletics
Music/Arts
SGA
Other
Total
Male
Male total
Female
Female total
Athletics total
Music/arts total
SGA total
Other total
Table total

5. Joint Probability

6. Marginal Probability

7. Conditional Probability

8. Example 1
Using the table below, what is the joint probability of a female that is involved in SGA?
0/30 = 0%
Athletics
Music/Arts
SGA
Other
Total
Male 10 5 1 2 18
Female 6 12 15 11 3 30

9. Example 2
Using the table below, what is the marginal probability of choosing someone who is involved with athletics?
15/30 = 50%
Athletics
Music/Arts
SGA
Other
Total
Male 10 5 1 2 18
Female 6 12 15 11 3 30

10. Example 3
Using the table below, what is the conditional probability given that a person is male, that they are involved in Music/Arts?
5/18 = 28%
Athletics
Music/Arts
SGA
Other
Total
Male 10 5 1 2 18
Female 6 12 15 11 3 30

11. Task – Public Opinions

12. Homework
Back of Task/Handout