Probability Terms

  • Combination- the way of selecting several things out of a group, where order does not matter.
  • Complement- the complement of a set refers to things outside of the set.
  • Compound Events- the probabilistic outcomes from two or more events.
  • Counting Principle- a simple way to calculate possible outcomes regardless of how many choices there are.
  • Event-  Any possible outcome of an experiment in probability.
  • Experimental Probability-  The ratio of the number of times an outcome occurs to the total amount of trials performed.
  • Factorial- The expression n! is a symbol to indicate the product of all counting numbers beginning with n and counting backwards to 1.
  • Independent Events-  Events whose outcomes do not influence each other.
  • Intersection- The set of all elements contained in all of the given sets.
  • Line of Best Fit- The line that best represents the trend that the points in a scatter plot follow.
  • Outcome –  A possible result of an experiment.
  • Permutation- the rearranging of objects in an ordered fashion.
  • Probability- A measure of the likelihood of an event.
  • Random Sample- A sample chosen from a population such that each data unit in the population has an equal chance of being chosen each time.
  • Sample Space- the set of all possible outcomes from an experiment.
  • Scatter Plot- The graph of a collection of ordered pairs that allows an exploration of the relationship between the points.
  • Set-  A collection of numbers that have some characteristic in common.
  • Simulation- An experiment that models a real-life situation.
  • Theoretical Probability- The mathematical calculation that an event will happen in theory.
  • Tree Diagram-  A diagram that shows all the possible outcomes of an event.
  • Union-  The set of all elements that belong to at least one of the given two or more sets.
  • Venn Diagram- A picture that illustrates the relationship between two or more sets.

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