Probability Vocabulary

1st Semester

Here you will find all the vocabulary words that you will need to know for this unit. These can and will show up on the final exam.

Combination

An ordered arrangement where order does not matter

Complement

The set of all outcomes in the sample space that are not outcomes in the event. This is the "not" of probability

Conditional Probability

The probability of one event occurring assuming that the other event has already occurred

Dependent Event

The probability of occurrence of an event when it has an effect on the probability of the other event

Empirical Probability

Probability based on the event and how often something occurred in the event

Event

Any subset of a sample space

Expected Value

A mathematical was to use probabilities to determine what to expect in various situations over a period of time

Experiment

Any occurrence for which the outcome is uncertain

Factorial

The product of that integer shown and all the integers below it

Fundamental Counting Principle

A rule to count all the possible ways for an event to happen or the total number of possible outcomes in a situation

Independent Event

The probability of occurrence of an event A is not affected by the occurrence of another event B. This is the "and" of probability

Law of Large Numbers

As an experiment is repeated more and more times, the empirical probability of an event tends to get closer to the theoretical probability of that event

Mutually Exclusive

Events that are impossible to occur simultaneously. This is the "or" of probability

Odds

The probability that the event will occur divided by the probability that the event will not occur

Odds in Favor

The probability of an event occurring divided by its complement

Odds Not in Favor

The probability of an events complement divided by the probability of the event occurring

Permutation

An ordered arrangement where order does matter

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Permutation Formula