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Find an Online Tutor Now Choose an expert and meet online. A controlled experiment is one in which every parameter is held constant except for the experimental independent variable. Usually, controlled experiments have control groups. Sometimes a controlled experiment compares a variable against a standard. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content.
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Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Share Flipboard Email. Anne Marie Helmenstine, Ph. Chemistry Expert. When mice are placed in bell jars, the species of the mouse and the jar in which it was placed remain consistent, making them controlled variables. When additional items are placed in different jars, results are compared with the control jar that contains just a mouse.
While controls give researchers an indication of changes that have occurred within an experiment, courtesy of dependent and independent variables, control variables give validity to all acquired information.
If any aspect of a controlled variable is altered, it creates unreliable results. The difference between a control and a controlled variable may be slight, but they are both essential in experimental research. Blue has written for various websites, specializing in travel-related topics. She holds a Bachelor of Science in psychology from Philadelphia University. What Are Comparative Experiments?
What Is the Meaning of Variables in Research? What Is a Constant in the Scientific Method?
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