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 'certain'?

Back

An event is 'certain' if it will definitely happen, with a probability of 1.

Front

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

Back

An event is 'impossible' if it cannot happen at all, with a probability of 0.

Front

What is the probability of picking a blue marble from a bag with 4 yellow and 8 blue marbles?

Back

The probability is likely, as there are more blue marbles than yellow.

Front

What is the probability of rolling a number cube and getting a 6?

Back

The probability is 1/6, since there is one 6 and six total outcomes.

Front

What is the probability of landing on the orange section if it is 1 out of 4 equal sections?

Back

The probability is 1/4.

Front

What is the probability of rolling a number cube and getting a 5 or a 6?

Back

The probability is 1/3, as there are two favorable outcomes (5 and 6) out of six total outcomes.

Front

What does 'likely' mean in terms of probability?

Back

'Likely' means that an event has a high chance of occurring.

Front

What does 'unlikely' mean in terms of probability?

Back

'Unlikely' means that an event has a low chance of occurring.

Front

How can you express probability as a fraction?

Back

Probability can be expressed as the number of favorable outcomes divided by the total number of possible outcomes.