A control variable is a variable that is held constant in an experiment to isolate the effects of the independent variable.
The control variable is often the same as the baseline condition, or the condition that exists before the experiment begins.
By holding the control variable constant, the experimenter can be sure that any changes in the dependent variable are due to the independent variable, and not to some other factor.
The researchers controlled the temperature of the experiment in order to ensure that the results were not affected by changes in temperature.
Noun:
Control variable: A variable that is held constant in an experiment in order to isolate the effects of the independent variable.
Adjective:
Control variable: Relating to a control variable.
Verb:
To control variable: To hold a variable constant in an experiment.
The etymology of the word "control variable":
Control: This comes from the Latin word "controllare", which means "to check" or "to restrain".
Variable: This comes from the Latin word "variabilis", which means "changeable".
The word "control variable" is made up of these two parts:
Control: This refers to the act of holding a variable constant in an experiment.
Variable: This refers to a factor that can change in an experiment.
What is a control variable in an experiment?
Question:
What is the role of a control variable in a scientific experiment, and why is it important to keep them constant during the investigation?
Answer:
The control variable in a scientific experiment is a factor that remains constant throughout the investigation. Its role is to ensure that any observed changes in the dependent variable are solely due to the manipulation of the independent variable. By keeping the control variables constant, researchers can eliminate any potential confounding factors that may influence the results. This enhances the reliability and validity of the experiment, allowing for accurate conclusions to be drawn about the relationship between the independent and dependent variables.