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en.wikipedia.org/wiki/Control_variable

The control variable (or scientific constant) in scientific experimentation is the experimental ... Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus ...

www.sciencebuddies.org/science-fair-projects/project_variables.shtml

A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, ... one variable it would be hard to figure out which change is causing what you ...

www.answers.com/Q/What_is_the_factor_that_can_change_in_an_experiment_called

All factors in an expermient are called variables. The variable you can change yourself is called the independent variable; the one you expect to change and ...

www.answers.com/Q/A_factor_that_changes_in_an_experiment_in_order_to_test_a_hypothesis

This is a factor that changes in an experiment. Proper procedure calls for testing only one of these at a time? well the last guy who answered wasnt very smart.

explorable.com/independent-variable

This is the factor manipulated by the researcher, and it produces one or more ... the variable is isolated from any other factor, allowing experimental manipulation  ...

www.reference.com/science/one-factor-can-changed-experiment-7371d6883d1e435f

The factor that is changed or controlled in an experiment is called the independent variable ... to the independent variable in order to test the effects these changes.

explorable.com/research-variables

The research variables, of any scientific experiment or research process, are factors that can be manipulated and measured.

www.thoughtco.com/controlled-experiment-609091

Apr 5, 2017 ... Here is a look at what that is and why this type of experiment is so popular. ... Sometimes it's necessary to change more than one variable, but all of ... experiments so they can see additional factors that may be affecting their ...

lrrpublic.cli.det.nsw.edu.au/lrrSecure/Sites/Web/research/student_research/2_collect/collect_07.htm

A controlled experiment tries to keep as many of the variables the same, or constant, ... When you change one variable during an experiment, another variable may change in response. ... the responding factor; the factor that changes in.

www.longwood.edu/cleanva/images/sec6.designexperiment.pdf

An experiment starts and finishes with the factors that change during the experiment. These are the variables. The experimenter will purposely change one of the ...