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Standardization
Control
To be able to compare the results to something.
If you do not have a control,then you cannot compare your test results.
statistical tests
line graphs
line graphs
statistical tests
statistical tests
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Standardization
Control
A control experiment provides a benchmark against which to compare the results of the main experiment. For example, to know if heating a material changes its resistance, you must be able to compare the results of the heated experiment to a copy in which the material was left unheated.
Because it helps them know the results of the objects in the experiment and how they differ. This way the scientist knows which succeeded and which failed.
The Control