Probability FLASHCARD

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

'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.

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

'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.

'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.

1/2

1/4

3/4

1/5

1/6