1. Frequency

2. Frequency Looking at how often something occurs in context.

3. P(odd) = Example#1: You roll a six-sided die whose sides are numbered from 1 through 6. a) What is the probability of rolling an ODD number?

4. P(“t”) = b) What is the probability of rolling a number that starts with the letter “t”?

5. Example #2: A jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. P(red) = P(green) = P(blue) = P(yellow) =

6. Example#2: A jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. P(orange) =

7. Example #3: A deck of cards contains 52 cards made up of 4 different suits – Hearts, Diamonds, Spades, and Clubs. a) What is the probability of drawing a heart?

8. b) What is the probability of drawing a 3? c) What is the probability of drawing a face card?

9. Practice #4 The table gives the handedness and eyedness of a randomly selected group of 100 people. Right-EyedLeft-Eyed Right-Handed 5731 Left-Handed 66 a)What is the probability of getting a left-handed person?

10. Right-EyedLeft-Eyed Right-Handed 5731 Left-Handed 66 b)What is the probability of getting someone who is left-eyed? Practice #4 The table gives the handedness and eyedness of a randomly selected group of 100 people.

11. c)What is the probability of getting someone who is left-handed and is also left-eyed? Right-EyedLeft-Eyed Right-Handed 5731 Left-Handed 66 Practice #4 The table gives the handedness and eyedness of a randomly selected group of 100 people.

12. d)What is the probability of getting someone who is right-handed and is also right-eyed? Right-EyedLeft-Eyed Right-Handed 5731 Left-Handed 66 Practice #4 The table gives the handedness and eyedness of a randomly selected group of 100 people.

13. You Try!! e) f)

14. Practice #5 The chart shows favorite subjects of students based on their gender. MathScienceEnglishSS Male 46421325 Female 12214536 a)What is the probability that a randomly chosen student likes Social Studies the most?

15. MathScienceEnglishSS Male 46421325 Female 12214536 b)What is the probability that a randomly chosen student is female? Practice #5 The chart shows favorite subjects of students based on their gender.

16. MathScienceEnglishSS Male 46421325 Female 12214536 c)What is the probability that a randomly chosen student both likes science and is a male? Practice #5 The chart shows favorite subjects of students based on their gender.

17. MathScienceEnglishSS Male 46421325 Female 12214536 d) What is the probability that a randomly chosen student likes social studies and is a female? Practice #5 The chart shows favorite subjects of students based on their gender.

18. You Try!! e) f)