Term | Definition |
probability | the change that some event will occur. |
simple event | one outcome or a collection of outcomes. |
outcome | a possible result in a probability experiment. |
random | outcomes occur at random if each outcome is equally likely to occur. |
complementary events | two events in which either one or the other must happen, but they cannot happen at the same time. |
uniform probability model | a probability model which assigns equal probability to all outcomes. |
theoretical probability | the ratio of the number of ways an event can occur to the number of possible outcomes. it is based on what should happen when conducting a probability experiment. |
experimental probability | an estimated probability based on the relative frequency of positive outcomes occurring during an experiment. it is based on what actually occurred during such an experiment. |
sample space | the set of all possible outcomes in a probability experiment. |
tree diagram | a diagram used to show the sample space and the total number of possible outcomes in a probability experiment. |
compound event | an event that consists of two or more simple events. |
simulation | an experiment that is designed to model the action in a given situation. |
fundamental counting principle | uses multiplication of the number of ways each event in an experiment can occur to find the number of possible outcomes in a sample space. |
premutation | an arrangement or listing in which order is important. |
independent events | two or more events in which the outcome of one event does not affect the outcome of the other event(s). |
dependent events | two or more events in which the outcome of one event does affect the outcome of the other event(s). |
fair game | a game where each player has an equally likely chance of winning. |
compound event | an event that consists of two or more simple events. |
relative frequency | a ratio that compares the frequency of each category to the total. |
unfair game | a game where there is not a chance of each player being likely to win. |