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Probability
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Terms in this set (23)
Probability
The likelihood of something happening.
Fundamental counting principle
If one event has m possible outcomes and a second independent event has n possible outcomes, then there are m x n total possible outcomes for the two events together.
Permutation
Selection of a group in which order is important.
Combination
Grouping of items in which order dies not matter.
Factorials
The result of multiplying a sequence of descending natural numbers down to 1
4!=(such as 4 × 3 × 2 × 1=24)
Equally likely to happen
The outcomes of an experiment are equally likely to occur.
Outcomes
An outcome is a possible result of an experiment.
Sample space
Set of all possible outcomes or results of that experiment.
Event
event is a set of outcomes of an experiment
Favorable outcome
Outcomes in specified event.
Theoretical probability
The ratio of the number of favorable outcomes to the total number of outcomes.
Complement
The set of all outcomes in the sample space that are not E- event.
Geometric probability
The form of theoretical probability by a ratio of lengths, areas, or volumes.
Experiment
Use to estimate the probability of an event.
Trial
Each repetition of an experiment is a trail.
Experimental probability
The ratio of the number of times that the event occurs.
Independent events
When the occurrence of one event doesn't affect the probability of the other.
Dependent events
When the occurrence of one event affects the probability of the other.
Conditional probability
Process to find dependent events.
P(B|A)- probability of B given that A has occurred.
Simple events
Event that describes a single outcome.
Compound event
Event made up by two or more simple events.
Mutually exclusive events
Events that cannot both occur in the same trail of an experiment.
Inclusive events
Events that have one or more outcomes in common.
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