Independent_and_Dependent_Variables.ppt
- 1. I N D E P E N D E N T A N D D E P E N D E N T V A R I A B L E S A R E R E L A T E D T O O N E A N O T H E R . Independent and Dependent Variables
- 2. Independent Variable The Independent part is what you, the experimenter, changes or enacts in order to do your experiment.
- 3. Dependent Variable The dependent variable is what changes when the independent variable changes - the dependent variable depends on the outcome of the independent variable.
- 4. For instance: if you were measuring the growth rate of plants under full sunlight for 8 hours a day versus plants that only have 4 hours of full sunlight per day, the amount of time per day of full sunlight would be the independent variable - the variable that you control. The growth rate of the plants would be a dependent variable.
- 5. Independent Dependent Cause Effect Before After Input Output What you do What happens
- 6. Independent = input a.k.a. x-value Dependent = output a.k.a. y-value Dependent variables go on y axis. Independent variables go on x axis.
- 7. Time is almost always independent and that is why it nearly always on x axis. Time doesn't depend on anything in most experiments. But many things depend on it. Those will go on the y axis.