Basic Concepts of Probability

Read this section about basic concepts of probability, including spaces, and events. This section discusses set operations using Venn diagrams, including complements, intersections, and unions. Finally, it introduces conditional probability and talks about independent events.

  • The sample space of a random experiment is the collection of all possible outcomes.
  • An event associated with a random experiment is a subset of the sample space.
  • The probability of any outcome is a number between 0 and 1. The probabilities of all the outcomes add up to 1.
  • The probability of any event A is the sum of the probabilities of the outcomes in A.