What are extraneous variables?

Answer

Extraneous variables are variables that may bear effect on independent variables that affect certain behaviour of a subject that is being studied. These variables also may influence both choice of a variable treatment and its response.
Q&A Related to "What are extraneous variables?"
This is called 'third party' variable or 'strange' variable. This unrelated variable necessarily influences a particular independent and dependent variable relationship. For e.g.
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An extraneous variable is any variable that affects the results, that a researcher has not manipulated: http://en.wikipedia.org/wiki/Extraneous_….
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An extraneous variable is a variable that is not being measured in an experiment but may influence the results. For example, if you want to measure the effect of room temperature
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When performing a study of some event, the independent variable is the thing that is controled. For example, if you are studying the effects of an inspirational video on freshmen
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2 Additional Answers
Extraneous variables are undesirable variables that influence the relationship between the variables that an experimenter is examining. It usually bears an effect on the behaviour of the subject being studied and it is assumed to influence the dependent variable.
Extraneous variables are undesirable variables that influence the relationship between the variables that an experimenter is examining. It only affects the people in the experiment. Some of the examples include: gender ethnicity, social class, genetics age and intelligence.
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