Statistics and Probability Dictionary

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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