1. PROBABILITY, EVENTS AND OUTCOMES Yo yo yo welcome back!!!!!!!! Happy NEW YEAR! SWBAT: Define probability, event & outcomes Determine the probability of a “favorable” even occurring

2. Ex: …. In the problem above, the experiment is spinning the spinner. Do you agree?! An experiment is a situation involving chance or probability that leads to results called outcomes.

3. The possible outcomes are landing on yellow, blue, green or red. An outcome is the result of a single trial of an experiment.

4. One event of this experiment is landing on blue. An event is one or more outcomes of an experiment.

5. The probability of landing on blue is one fourth. Probability is the measure of how likely an event is.

6. To land on BLUE would be a “favorable” outcome for me. Blue blue blue is my favorite color (presently).

7. Yes, write this down too!!  Probability Of An Event P(A) = The Number Of Ways Event A Can Occur The total number Of Possible Outcomes

8. What’s the probability of landing on yellow? Red? Probability is the measure of how likely an event is.

9. Ok Imagine a  A glass jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability of choosing a red marble? a green marble? a blue marble? a yellow marble?  What are the possible outcomes?....

10. Ok Imagine a  A glass jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability of choosing a red marble? a green marble? a blue marble? a yellow marble?

11. Ok Imagine a  A glass jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability of choosing a red marble? a green marble? a blue marble? a yellow marble?  P(red) = # of ways to choose red = 6 = 3 total # of marbles 22 11

12. Ok Imagine a  A glass jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability of choosing a red marble? a green marble? a blue marble? a yellow marble? P(green) = # of ways to choose green = 5 total # of marbles 22

13. Ok Imagine a  A glass jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability of choosing a red marble? a green marble? a blue marble? a yellow marble?  P(blue) = # of ways to choose Blue = 8 = 4 total # of marbles 22 11

14. Ok Imagine a  A glass jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability of choosing a red marble? a green marble? a blue marble? a yellow marble? P(yellow) = # of ways to choose yellow = 3 total # of marbles 22

15. Exit Ticket  Which of the following is an experiment? Tossing a coin. Rolling a single 6-sided die. Choosing a marble from a jar. All of the above.  2. Which of the following is an outcome? Rolling a pair of dice. Landing on red. Choosing 2 marbles from a jar.  3. Which of the following experiments does NOT have equally likely outcomes? Choose a number at random from 1 to 7 Toss a coin. Choose a letter at random from the word SCHOOL. None of the above.  4. What is the probability of choosing a vowel from the alphabet?  5. A number from 1 to 11 is chosen at random. What is the probability of choosing an odd number?