Probability FLASHCARD

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 'certain' mean in probability?

Back

'Certain' means that an event will definitely happen. For example, if you roll a die, it is certain that you will get a number between 1 and 6.

Front

What does 'impossible' mean in probability?

Back

'Impossible' means that an event cannot happen at all. For example, rolling a 7 on a standard die is impossible.

Front

What does 'probable' mean in probability?

Back

'Probable' means that an event is likely to happen, but it is not guaranteed. For example, if you have more red marbles than blue marbles, it is probable that you will pick a red marble.

Front

What does 'unlikely' mean in probability?

Back

'Unlikely' means that an event is not likely to happen. For example, if you have one blue marble and many red marbles, it is unlikely that you will pick the blue marble.

Front

If you flip a coin, what is the probability of getting heads?

Back

1/2

Front

If you spin a spinner with 4 equal sections, what is the probability of landing on one specific color?

Back

1/4

Front

If you have 3 red marbles and 1 blue marble, what is the probability of picking a red marble?

Back

3/4

Front

If you have a bag with 5 marbles: 2 black, 2 red, and 1 blue, what is the probability of picking a blue marble?

Back

1/5

Front

What is the probability of rolling a 3 on a standard die?

Back

1/6