Probability and Outcomes

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Probability and Outcomes

• By Mr. Bales

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Objective

• By the end of this lesson, you will be able to
  describe probability.
• Standard 4SDAP2.2 - Students will express
  outcomes of experimental probability situations
  verbally and numerically (e.g., 3 out of 4, or
  3/4)
• Standard 4SDAP2.1 - Students will represent all
  possible outcomes for a simple probability
  situation in an organized way (e.g., tables,
  grids, tree diagrams)

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Introduce

• I have a bowl full of red and green shapes. (20
  red shapes and 5 green shapes)
• If I reach into the bowl without looking, do you
  think I will get a red shape or a green shape?
  Why?
• In this bowl, I have 10 orange, 5 yellow, and 5
  green.
• What are the chances that I will get a white
  shape?
• Now, in this bowl, I have 12 yellow shapes.
• What is the chance I will get a yellow shape?

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Get Ready to Learn

• Only Lukas knew the colors of the marbles in a
  bag. He asked Alex to reach in and choose a
  marble without looking.
• What color do you think Alex will grab?

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Outcome and Probability

• An outcome is a result in an experiment.
• The chance that an outcome will occur is its
  probability.
• The words certain, likely, equally likely,
  unlikely, and impossible can describe probability.

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Describe Outcomes

• Describe how likely it is that Taylor will choose
  a yellow marble from Skylars bag.
• There are 8 marbles in the bag, and two are
  yellow.
• In the bag, less than half of the marbles are
  yellow. So, its unlikely that Taylor will choose
  a yellow marble.

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Describe Outcomes

• Money - The table shows the coins Maddie has in
  her pocket. Suppose she drops a coin on the
  ground.
• Describe the probability that the coin she
  dropped is a dime.
• There are 8 coins in Maddies pocket. Of those
  coins, five are dimes.

Coin Frequency
Quarter 1
Dime 5
Penny 2
TOTAL 8
Since most of the coins are dimes, it is likely
that Maddie dropped a dime.
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Bales Bucks!!
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Assignment

• Page 633 - s 9 - 16
• Get them all correct, No Math Homework