Unit 15 Probability Vocabulary

The likelihood that an event will occur.

• Experimental Probability

• Favorable Outcome

• Sample Space

• Theoretical Probability

The ratio of the number of times an event occurs to the number of times the experiment is done.

• Experimental Probability

• Favorable Outcome

• Sample Space

• Theoretical Probability

Two events where the occurrence of one does not affect the probability of the occurrence of the other.

• Sample Space

• Dependent Events

• Independent Events

• Favorable Outcome

An event whose probability of occurrence depends upon the probability of occurrence of two or more independent events.

• Sample Space

• Dependent Events

• Independent Events

• Favorable Outcome

If M and N are intersecting sets of outcomes in the sample space, the P(M or N) = P(M) + P(N) - P(M  $\cap$  N). If M and N are disjoint sets of outcomes in the sample space, then P(M or N) = P(M) + P(N)

• Addition of Probabilities Principle

• Venn Diagram

• Intersection

• Union

The possible outcomes you want to happen.

• Intersection

• Union

• Sample Space

• Favorable Outcome

The set of all possible outcomes of a probability experiment.

• Dependent Events

• Independent Events

• Sample Space

• Favorable Outcome

A picture using circles to represent sets, with the position and overlap of the circles indicating the relationships between the sets.

• Addition of Probabilities Principle

• Venn Diagram

• Intersection

• Union

An overlapping of elements.

• Addition of Probabilities Principle

• Venn Diagram

• Intersection

• Union