SOL 4.13 Probability Review

Front

What is probability?

Back

Probability is the 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 rolling a number greater than 6 on a standard number cube (1-6)?

Back

0 (impossible) because a standard number cube only has numbers 1 to 6.

Front

How do you calculate the probability of an event?

Back

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

Front

If a spinner has 4 sections: 1 red, 1 blue, 1 green, and 1 yellow, what is the probability of landing on blue?

Back

1/4 or 25%.

Front

What is the probability of spinning a color that is NOT red on a spinner with 3 red and 5 blue sections?

Back

5/8.

Front

If a bag contains 2 red, 3 blue, and 5 green marbles, what is the probability of picking a blue marble?

Back

3/10.

Front

What does 'likely' mean in terms of probability?

Back

An event is 'likely' if it has a high chance of occurring, typically a probability greater than 0.5.

Front

What does 'unlikely' mean in terms of probability?

Back

An event is 'unlikely' if it has a low chance of occurring, typically a probability less than 0.5.