14
May
Independant And Dependant Variable. The dependent variable is the presumed effect. The independent variable represents the cause. The independent variable is the one the experimenter controls. There are two key variables in every experiment.
The variable that an experimenter changes or controls so that they can observe the effects on the dependent variable. A Dependent variable is what happens as a result of the independent variable. In a study to determine whether how long a student sleeps affects test scores the independent variable is the length of time spent sleeping while the dependent variable is the test score. The effect on the dependent variable is measured and recorded. The Independent variable is the presumed cause. The dependent variable is the variable that changes in response to the independent variable.
Independent Variable The variable that is stable and unaffected by the other variables you are trying to measure.
For example if we want to explore whether high concentrations of vehicle exhaust impact incidence of asthma in children vehicle exhaust is the independent variable while asthma is the dependent variable. What is being studiedmeasured. The dependent variable is obviously dependent on the independent variable. It is the presumed effect. There are two key variables in every experiment. For example if we want to explore whether high concentrations of vehicle exhaust impact incidence of asthma in children vehicle exhaust is the independent variable while asthma is the dependent variable.