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
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.
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.