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Manipulated variable

Definition

noun, plural: manipulated variables

The variable that is manipulated in an experiment to determine its effect(s) on variable(s) reliant to it.


Supplement

For example:

An experiment is designed to see if a newly developed drug is effective in treating patients with cough. Some of the patients were given the drug while others the placebo. To determine if the drug is effective, the recovery of patients taking the drug is monitored and compared against that of the patients taking the placebo. If the patients taking the drug are able to recover faster than the patients taking the placebo, it could mean that the drug is effective against cough. If patients taking the drug and the placebo have the same rate of recovery, the drug may not be an effective treatment for cough.

In this case, the manipulated variable is the treatment given to patients with cough (i.e. the drug or the placebo).


Synonym:

  • controlled variable
  • explanatory variable
  • exposure variable
  • input variable
  • dependent variable
  • predictor variable
  • regressor

Compare: independent variable


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Results from our forum


Re: Control experiment

What is a controll experiment? A control experiment is when a variable in an experiment is manipulated to predict the differences between the experiment and the control group and all other ...

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by g0ld3n88
Wed Dec 09, 2009 11:59 pm
 
Forum: General Discussion
Topic: Control experiment
Replies: 2
Views: 9291

Control experiment

What is a controll experiment? A control experiment is when a variable in an experiment is manipulated to predict the differences between the experiment and the control group and all other ...

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by hicando1
Sun Nov 29, 2009 11:38 pm
 
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by redfoxindigo
Sat Dec 02, 2006 5:43 pm
 
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Topic: Population genetics/ Community interaction question help
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manipulated variables,responding variables,homeostasis

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by mith
Sun Sep 11, 2005 3:15 am
 
Forum: General Discussion
Topic: manipulated variables,responding variables,homeostasis
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