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Probability
Lessons 30-33
Term | Definition |
---|---|
Probability | likelihood of an event happening |
Outcome | one of the possible results of an experiment |
Event | set of one or more outcomes |
Experiment | any activity with an observable result |
Certain | An event will definitely happen. 100% or 1.0 probability |
Equally Likely | An event will equally likely happen or not happen. 50% or .5 probability |
Impossible | An event will definitely not happen. 0% or 0 probability |
Likely | An event is more likely to happen than not happen. 51-99% or 0.51-.99 probability |
Unlikely | An event is less likely to happen than to happen. 1-49% or 0.01-.49 probability |
Trial | An experiment done one time |
Experimental probability | the ratio of the number of times an event occurs to the total number of trials or times the activity is performed |
Theoretical probability | what you would expect to happen in an experiment without actually doing it. |
Sample Space | set of all possible outcomes for an experiment |
Uniform | Each outcome is equally likely |
Non-Uniform | Each outcome is not equally likely |
Compound Event | More than one event occurring. |
Tree Diagram | A way to show to all possible outcomes with the events branching off from event to another. |