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In [[design of experiments|experimental design]], an independent variable is a [[random variable]] used to define treatment groups.
 
In [[design of experiments|experimental design]], an independent variable is a [[random variable]] used to define treatment groups.
   
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== Examples <strike>for variables </strike>this site is lik wikipedea ! dont listen to it!!!!!--[[Special:Contributions/69.255.167.31|69.255.167.31]] 02:07, January 8, 2010 (UTC)==
== Examples ==
 
   
 
The wages of an employee depend on the time worked. Time is the independent variable that varies among employees, and the wages are calculated directly from a specific amount of time. Thus wages are ''dependent'' on time worked.
 
The wages of an employee depend on the time worked. Time is the independent variable that varies among employees, and the wages are calculated directly from a specific amount of time. Thus wages are ''dependent'' on time worked.

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