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Introduction to probabilityPowerPoint Presentation

Introduction to probability

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Introduction to probability. What is probability? The likelihood of an event Occurring.

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Theoretical Probability

probability

The likelihood of an event Occurring

Suppose you have 4 nickels, 2 dimes, and 6 quarters in your pocket. If you draw a coin randomly from your pocket, what is the probability that: a. You will draw a nickel? b. You will draw a half-dollar? c. You will draw a quarter?

d. You will draw a silver coin?

- Event pocket. If you draw a coin randomly from your pocket, what is the probability that: – “drawing a specific coin”
- Sample space – All possible out comes
- P(E) = Number of favorable outcomes
Total Number of Outcomes

Ways to express probability

- Fraction
- Decimal
- Percent
- Odds

- You will draw a nickel? pocket. If you draw a coin randomly from your pocket, what is the probability that:
- P(nickel) =
- b. You will draw a half-dollar?
- P(half-dollar) =
- c. You will draw a quarter?
- P(quarter) =
- You will draw a silver coin?
- P(silver coin) =

- Your pocket. If you draw a coin randomly from your pocket, what is the probability that:group’s job is to conduct an experiment to determine the following:
- What is the probability of drawing each
- “different” item in the bag?
- Rules:
- NO ONE LOOKS INSIDE!!!
- ONLY 1 item can be drawn out at a time.
- The Item MUST be put back in the bag before another Item is drawn.
- Create a system for recording your results.

- NOW…… pocket. If you draw a coin randomly from your pocket, what is the probability that:
- If I told you there are 40 chips in your bag….
- Predict how many of each are in your bag
- Red Chips
- Blue Chips
- Green chips
- Purple chips
- NOW COUNT!!!

What is the difference between Theoretical probability and Experimental Probability?

Let the Good Times Roll!! Experimental Probability?

Pick a Partner.

Select which player will be ODD and which will be EVEN.

Each turn consists of rolling 2 dice.

One player rolls to find the product of the two dice.

If the product is the even, then the player who predicted even gets a point. If the product is the odd, then the player who predicted odd gets a point.

First player to 10 points WINS!!

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