Probability Review

Probability is ...

• the chance that some event will occur.
• a game that involves coins.
• a guarantee.

Probability can be written as ...

• a fraction
• a decimal
• a percent
• all of the above

What is the probability of flipping a coin and getting heads?

• 1/2
• 1/3
• 1/4
• Never, Tails never fails.

Experimental Probability is:

• What Will happen 
• What actually happens
• What should happen
• What I think Happens

Theoretical Probability is?

• What Should happen
• What does happen
• What Will Happen
• What I want to Happen

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

The chart below represents the number of marbles in a jar.
P(green) = 

• 5/19
• 10/28
• 5/14

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10
• 3/9
• 1/9
• 1/3

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

How do you get the probability of 2 or more events (compound)?

• Add the probabilities of each event together!

• Multiply the probabilities of each event together!

• Divide the probabilities of each event with one another!

• Subtract the probabilities of each event with one another!