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Kelly is playing a game using 8 number cards numbered 1-8. Kelly scores a point if she selects a card that has a 7 or greater. 1 1 2 2 3 3 4 4 5 5 6.

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Presentation on theme: "Kelly is playing a game using 8 number cards numbered 1-8. Kelly scores a point if she selects a card that has a 7 or greater. 1 1 2 2 3 3 4 4 5 5 6."— Presentation transcript:

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3 Kelly is playing a game using 8 number cards numbered 1-8. Kelly scores a point if she selects a card that has a 7 or greater

4 Example: Blindly selecting cards in Kelly’s game Probability experiment- an experiment where the exact results cannot be predicted.

5 Outcome- a possible result in a probability experiment. Example: Any of the numbers (1- 8) on the cards in Kelly’s game.

6 Sample space- a set of all possible outcomes in a probability experiment. Example: A sample space for this experiment is 1, 2, 3, 4, 5, 6, 7, & 8 (the numbers on the card).

7 Event- a set of one or more outcomes in a probability experiment. Example: Selecting an even number or selecting a specific number.

8 Probability- a number greater than or equal to 0 and less than or equal to 1, showing the chance of an event happening. The probability (P) of an event (A) is… P(A) = Number of favorable outcomes Number of possible outcomes Example: Kelly is hoping to select a 7 or greater. P(7 or greater) = Selecting a 7 or 8 Number of possible outcomes This means the favorable outcomes are selecting a 7 or 8. Possible outcomes are 1, 2, 3, 4, 5, 6, 7, or ==

9 Likely- an event will probably happen. Since there are 4 blue sections and only 1 red section, it is likely that this spinner will land on blue.

10 Equally Likely- an event that is just as likely to happen as not to happen. Spinning a yellow or a green are equally likely.

11 Unlikely- an event that probably will not happen. Since green is only 1 of 11 sections, spinning a green is unlikely.

12 Impossible- an event that cannot happen. The possibility of spinning a yellow is impossible.

13 Certain- an event will definitely happen. The possibility of spinning a blue is certain.

14 %0.125⅛1:8 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(purple)

15 %0.25¼2:8 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(4 or 5)

16 %0.5½4:8 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(even #)

17 %0.625⅝5:8 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(# greater than 3)

18 40%0.408:20 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(blue shirt) Paul’s Closet Color# of Shirts Green3 Red4 White5 Blue8 Total20 2 5

19 35%0.357:20 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(green or red) Paul’s Closet Color# of Shirts Green3 Red4 White5 Blue8 Total20 7

20 75%0.7515:20 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(any color, but white) Paul’s Closet Color# of Shirts Green3 Red4 White5 Blue8 Total20 ¾

21 0%0.000:20 PercentDecimalFractionRatio Probability can be expressed in four different ways: ratio, fraction, decimal, & percent. P(pink) Paul’s Closet Color# of Shirts Green3 Red4 White5 Blue8 Total20 0


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