Probability

P(outcome) =

• (#of possible outcomes)/(#of desired outcomes)

• (#of desired outcomes)/(#of possible outcomes)

What is the sample space (all possible outcomes) for flipping a coin?

• Heads and Tails

• Heads

• Tails

• 1, 2, 3, 4, 5, 6

What is the sample space for rolling a die

• 1,2,3,4,5,6

• not 5

• even

• odd

Probability of rolling a 3 on a die

• Certain

• 
  Unlikely

• Likely

• Impossible

What do you multiply (#of desired outcomes)/(#of possible outcomes) by to get the probability as a percentage?

• denominator

• 10

• 100

• numerator

Number of outcomes you actually get during an experiment

• Experimental

• sample space

• Theoretical

• outcome

Number of outcomes you expect to happen

• Experimental

• Outcome

• Theoretical

• sample space

0 % chance of happening

• Likely

• Impossible

• Unlikely

• Certain

1-49% chance of happening

• Impossible

• likely

• equally likely

• unlikely

50% chance of happening

• Unlikely

• Equally likely

• Likely

• Certain