Probability

​AMDM 2.1 PROBABILITY

To calculate the probability of simple events and to analyze the difference between theoretical probability and experimental probability

Vocabulary

​Experimental Probability

expressed as a ratio descirbing the # of favorable outcomes to the # of total outcomes. Probability is measured on a scale from 0-1.

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​Probability-

found using outcomes obtained in an actual experiment or game (what actually happens").

the probability, based on MATH, that an even will occur (what should happen).

​Theoretical Probability

​Impossible

​Equally

Likely

​Certain

​0

​1/2

​1

​Unlikely

​Likely

​What SHOULD happen v. What ACTUALLY happens

Lets look at some scenarios!

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​Where would the following scenarios fall on the number line???

Multiple Choice

What is the probability food will be served for lunch?

• 20%

• 15%

• 50%

• 100%

Multiple Choice

What is the probability the sun will rise tomorrow?

• 100%

• 25%

• 50%

• 70%

Multiple Choice

P: You will have 2 birthdays this year.

• 50%

• 0%

• 100%

• 12%

Multiple Choice

P: You will see a cat this evening.

• 50%

• 100%

• 0%

• N/A

Multiple Choice

In the last two problems the scenarios included the letter (P) , what does it stand for?

• Principal

• Probability

• Particles

• Precipitation

​Probability

​favorable # of outcomes

​total # of outcomes

Multiple Choice

P: You will roll a "2" on a standard number cube.

• $$\frac{1}{6}$$

• 2

• .347

Multiple Choice

P: On your way to school you will see Michael Jackson.

• 0%

• 20%

• 45%

• 70%

Multiple Choice

P: You will pass Mr.B's Class without doing any work.

• 0%

• Dont play with me.

• You know the right answer.

• I wish you would click anything but the right answer