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Probability
Vocabulary practice
Term | Definition |
---|---|
experiment | is a situation involving chance which leads to a set of results |
outcome | is a possible result of the experiment, like rolling a 5 or a coin showing heads |
equally likely | if outcomes have the same chance of occurring |
trial | is a process which can be repeated to produce results like flipping a coin, rolling a die or spinning a spinner |
event | is either a single outcome (e.g. rolling a 3 ) or a collection of outcomes (e.g. rolling a 3, 4 or 5 ) |
probability | of an event is a number between 0 and 1 that represents the chance that the event occurs |
Impossible | an event with a probability of zero |
certain | An event with a probability of 1 |
Even chance | has a 50% chance or probability |
Sample space | is the set of possible outcomes of an experiment |
Complement | of some event E is written E′(or not E), E′is the event that E does not occur |
Venn diagram | is a pictorial representation of a two-way table without the total row and column |
Two-way table | lists the number of outcomes or people in different categories, with the final row and column being the total of the other entries in that row or column |
union | A or B |
intersection | A and B |
inclusive | A or B or both |
exclusive | A or B but not both |
Experimental probability | a situation involving chance or probability (perhaps a survey) that leads to results |