outcome
the result of a single trial of an experiment
experiment
a situation involving chance that leads to results, or outcomes
sample space
a list of all possible outcomes of an experiment. It is typically in closed in brackets, { }with commas between the outcomes
event
is one or a group of possible outcomes for a given situation
simple event
an event consisting of one outcome
probability
a measure of the likelihood that an event will occur. It is a way of assigning numerical valueto the chance than an event will occur. It is often written as P(event). For example: the probability ofrolling a 5 on a 6-sided number cube would be written as P(5). The probability of rolling an even number would be P(even)
equally likely
when the probabilities of all the outcomes of an experiment are equal.
experimental probability
is the ratio of the number of times an even occurs to the total number of trials performed
theoretical probability
is the mathematical calculation that an event will happen in theory. The formula for theoretical probability is the ratio of the number desired outcomes to the total number of possible outcomes, or the sample space.
probability model
A list of each possible outcome along with its probability.
uniform probability model
when all the probabilities in a probability model are equally likely to occur
non-uniform probability model
when all the probabilities in a probability model are not equivalent toeach other.
tree diagram
a tree-shaped diagram that illustrates the possible outcomes of a given situation
complementary events
events that consist of the desired outcomes and the remaining events that consist of all the undesired outcomes.
compound event
combines two or more events using the word "and" or the word "or." Determining theprobability of a compound event with the word "and" is different from compound event with "or." The difference is that a compound event with the word "and" means that you are determining the probability for one event, when determining a compound event with "or" you are determining the probability for more than one event.