Chance End of Unit Test

What does the term "frequency" mean in mathematics?

• The middle value in a data set

• How often something happens or occurs

• The difference between the highest and lowest values in a data set

• The average of all values in a data set

Answer explanation

The term 'frequency' in mathematics refers to how often something happens or occurs, making it the correct choice.

Which term describes an event that is neither likely nor unlikely to happen?

• impossible

• certain

• even chance

• unlikely

Answer explanation

The term 'even chance' describes an event that is neither likely nor unlikely to happen, making it the correct choice in this scenario.

What term would best describe something that has a moderate probability of happening, but is not certain?

• impossible

• likely

• very likely

• possible

Answer explanation

The term 'possible' best describes something with a moderate probability of happening but not certain, making it the correct choice.

Which of the following terms indicates the highest probability of an event occurring?

• unlikely

• possible

• likely

• certain

Answer explanation

The term 'certain' indicates the highest probability of an event occurring, making it the correct choice in this context.

What does the term 'unlikely' indicate about the probability of an event?

• It will definitely happen

• It has a low chance of happening

• It has a high chance of happening

• It cannot happen

Answer explanation

The term 'unlikely' indicates that an event has a low chance of happening, making it the correct choice.

What is an "event" in the context of probability?

• The outcome of a probability experiment

• A type of probability

• Something that happens, especially when it's being observed or studied

• The likelihood of an occurrence

Answer explanation

An 'event' in the context of probability refers to something that happens, especially when it's being observed or studied.

Imagine Avery rolls a dice. What is meant by "outcome" in this scenario in probability terms?

• The process of Avery observing the dice roll

• The chance of a specific number appearing on the dice

• What number appears on the dice as a result of the roll

• The calculation of probabilities for each number on the dice

Answer explanation

In this scenario, 'outcome' refers to what number appears on the dice as a result of the roll, representing the possible results of the experiment.

Match the following probabilities with their correct outcomes on a fair six-sided die.

• Probability of rolling a 3

• 1/5

• Probability of rolling a 2

• 1/6

• Probability of rolling a 4 or 5

• 1/3

• Probability of rolling a 1

• 1/2

What does a 0 on the probability scale represent?

• Certain

• Likely

• Unlikely

• Impossible

Answer explanation

A 0 on the probability scale represents an event that is impossible, as the probability of it occurring is zero.

What does a 1 on the probability scale indicate?

• Impossible

• Certain

• Unlikely

• Likely

Answer explanation

A 1 on the probability scale indicates certainty, meaning the event is guaranteed to happen.