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Probability, Events and Outcomes

SWBAT: Define probability, event & outcomes Determine the probability of a “favorable” even occurring. Probability, Events and Outcomes . Yo yo yo welcome back!!!!!!!! Happy NEW YEAR!. An experiment is a situation involving chance or probability that leads to results called outcomes.

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Probability, Events and Outcomes

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  1. SWBAT: • Define probability, event& outcomes • Determine the probability of a “favorable” even occurring Probability, Events and Outcomes Yoyoyo welcome back!!!!!!!! Happy NEW YEAR!

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

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

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

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

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

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

  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?

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