Statistics and Probability Dictionary

Select a term from the dropdown text box. The online statistics glossary will display a definition, plus links to other related web pages.

Select term:       

Variable

In statistics, a variable has two defining characteristics:

  • A variable is an attribute that describes a person, place, thing, or idea.
  • The value of the variable can "vary" from one entity to another.

For example, suppose we let the variable x represent the color of a person's hair. The variable x could have the value of "blond" for one person, and "brunette" for another.

When the value of a variable is the outcome of a statistical experiment , that variable is a random variable.

See also:   Tutorial: Variables | Tutorial: Probability Distributions