EVERYDAY SCIENCE

Detailed explanation-1: -A control variable is any variable that’s held constant in a research study. It’s not a variable of interest in the study, but it’s controlled because it could influence the outcomes.

Detailed explanation-2: -In a controlled experiment, all variables other than the independent variable are controlled or held constant so they don’t influence the dependent variable.

Detailed explanation-3: -In order for a scientist to ensure that only the independent variable is affecting the dependent variable, all the other factors acting upon the test situation (or test subjects) must be kept constant. These factors that must be kept the same are called the controlled variables, or constant variables.

Detailed explanation-4: -A constant variable, sometimes known as a control variable, is something you keep the same during an experiment.

Detailed explanation-5: -Definition(s): The variable that the control system attempts to keep at the set point value. The set point may be constant or variable.