Which term is defined as a trial where all the variables are held constant and a control is used as the standard of comparison for your experiment?

Which term is defined as a trial where all the variables are held constant and a control is used as the standard of comparison for your experiment?

• A. Independent Variable
• B. SI System
• C. Theory
• D. Control

Answer: (D)

In a controlled experiment, all variables are kept the same except for the one you’re testing, and a baseline setup called the control provides the standard for comparison. This setup lets you see whether any observed changes in the outcome are due to the factor you changed, rather than other influences. The control acts as a reference point, so you can attribute differences in results to the independent variable being tested. The other terms don’t fit this description: the independent variable is what you deliberately change, the SI system is a measurement system, and a theory is a well-supported explanation rather than a specific trial setup.

In a controlled experiment, all variables are kept the same except for the one you’re testing, and a baseline setup called the control provides the standard for comparison. This setup lets you see whether any observed changes in the outcome are due to the factor you changed, rather than other influences. The control acts as a reference point, so you can attribute differences in results to the independent variable being tested. The other terms don’t fit this description: the independent variable is what you deliberately change, the SI system is a measurement system, and a theory is a well-supported explanation rather than a specific trial setup.