Probability Review

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 (impossible) and 1 (certain).

Front

What does it mean if an event is 'impossible'?

Back

An impossible event has a probability of 0, meaning it cannot happen.

Front

What does it mean if an event is 'certain'?

Back

A certain event has a probability of 1, meaning it will definitely happen.

Front

What is an 'even chance' in probability?

Back

An even chance means that the probability of an event occurring is 1/2.

Front

What is the probability of rolling an even number on a standard die?

Back

The probability is 1/2, as there are three even numbers (2, 4, 6) out of six possible outcomes.

Front

If you have 12 shapes in a bag, how do you predict the number of times you will pull out a specific shape after multiple trials?

Back

You can use the ratio of that shape to the total shapes to predict the number of times it will be drawn.

Front

What is the probability of spinning green or blue if there are 5 green and 7 blue sections on a spinner?

Back

The probability is 1/2, as there are 12 total sections and 5+7=12 favorable outcomes.

Front

What does 'equally likely' mean in probability?

Back

Equally likely means that all outcomes have the same chance of occurring.

Front

What is the probability of selecting a large green shirt from a selection of small, medium, and large shirts in four colors?

Back

The probability is 1/12, as there are 3 sizes and 4 colors, making 12 total combinations.

Front

What is a 'sample space' in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.