Basic Probability Quiz

What is probability?

• a guarantee

• a certain outcome

• how likely an event is going to happen

• a game that involves betting

What is the probability of getting tails on a coin flip?

• There is no probability

• 2/2

• 1/2

• 100%

What does a probability line go up to?

• 1/2

• 0

• infinity

• 1

True or False:

An event is 0 on a probability line if it is likely to happen.

• True

• False

Answer explanation

False- if an event is zero on a probability line it is impossible

What is the probability of spinning the spinner and landing on a number

• 1/2
• 0
• 5/8
• 1

If I have a 75% chance of an event happening it is

• unlikely it will happen

• even chance it will happen

• likely it will happen

• certain it will happen

I have the same chances of rolling a die and it landing on 3 as I do flipping a coin and it landing on heads.

• True

• False

Answer explanation

False - rolling a die is 1/6 when a coin is 1/2

What is a trial in probability?

• an experiment with a set of random outcomes

• when you go to court

• an experiment with expected results

True or False:

If you add up all of the probabilities in a trial you will always get 1.

• True

• False

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11
• 5/6
• 1/3
• 5