WGU C955 - Module 7 Exam Questions & Answers 100% Correct

empirical probability - Answer An estimation of probability derived from recording data about what has happened during a series of experiments. complement - Answer An event that is the opposite of another event. The complement of heads when flipping coins is tails. The probabilities of an event and its complement always sum to 1. independent events - Answer Events, where the occurrence of one does not affect the probability that the other event(s) will occur. event - Answer An outcome, or set of outcomes, whose chance of occurrence can be represented with a probability. probability - Answer The chance of an event occurring. fair - Answer An experiment in which all outcomes are equally likely. sample size - Answer The number of different outcomes for an experiment. tree diagram - Answer A diagram that records all the events in a sample space by attaching each new set of events to each branch of the earlier events. The number of outermost branches gives the sample size. sample space - Answer The entire set of outcomes for a trial or experiment. theoretical probability - Answer Also called the Actual, Exact, or Classical Probability, it is computed by dividing the number of outcomes where the desired event occurs by the total number of outcomes. Note that the outcomes must be equally likely. frequency table - Answer A table which records the frequency of instances in different categories. It can be used to determine if the categories are dependent or independent. law of total probability - Answer A fundamental principle of probability which states that the product of all branches of a probability tree, added together equals 1. conditional probability - Answer A probability that depends on the occurrence of an earlier event.