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 'unlikely'?

Back

An event is 'unlikely' if it has a low chance of happening, typically less than 50% probability.

Front

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

Back

An event is 'likely' if it has a high chance of happening, typically more than 50% probability.

Front

What does 'equally likely' mean?

Back

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

Front

What is the probability of rolling a six on a standard die?

Back

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

Front

How do you calculate the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

What is the probability of picking a red marble from a jar with 2 pink, 6 red, and 4 blue marbles?

Back

The probability is 6/12 or 1/2.

Front

If an event is certain, what is its probability?

Back

The probability is 100% or 1.

Front

If an event is impossible, what is its probability?

Back

The probability is 0% or 0.

Front

What is the probability of spinning a spinner with 8 equal sections and landing on one specific section?

Back

The probability is 1/8.