Describing Event Likelihood with Words and Numbers

What term describes an event that will never happen?

• Certain

• Unlikely

• Likely

• Impossible

If an event is guaranteed to happen every time, what is it called?

• Certain

• Impossible

• Unlikely

• Likely

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

• Unlikely

• Just as likely as unlikely

• Certain

• Impossible

How is probability written in numerical form?

• As a percentage only

• As a whole number

• As a decimal only

• As a ratio or fraction

What is the probability of an impossible event in numerical form?

• 0

• 0.5

• 0.75

• 1

Convert the fraction 1/2 to a decimal.

• 1

• 0.75

• 0.5

• 0.2

What is the probability of the next baby being a boy?

• 25%

• 0%

• 75%

• 50%

What is the likelihood of it snowing in Florida in July?

• Likely

• Unlikely

• Impossible

• Just as likely as unlikely

If you have math homework 4 out of 5 school nights, what is the probability as a percentage?

• 80%

• 40%

• 20%

• 60%

What is the probability of drawing a red marble from a bag?

• Unlikely

• Impossible

• Likely

• Just as likely as unlikely