Without controlled setup in an experiment. How can the researcher know his data is comparable for study?
control and experimental setup
Answer The "Control"
Answer The "Control"
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To have something to compare the rest of the experiment to
Everything except what you're measuring. EXAMPLE: In a biological experiment using specially treated cells the experiment is run with the cells; this is the experiment. Then the experiment is run again with the same cells WITHOUT the special treatment; this is the control.
A control setup is something where you know how it will behave. It gives you a reference to measure affect of all other variables.
only 1 parameter, or, variable, is manipulated at a time
When performing an experiment it is very important to have a control set. It is important to have a control set because it ensures that the experiment can be repeated as many times as necessary.
were you setup your own experiment
A control experiment with respect to that variable. There may be several variables and it may be necessary to leave each one of them out in a different control.
When conducting experiments in science, it is important to have a baseline for knowing what happens if an independent variable is not present. In science, this is called the control experiment.