 Dependent and independent variables

In research and experimentation, variables are classified into two main types: independent variables and dependent variables. ### Independent Variable - **Definition**: The independent variable is the variable that is manipulated or controlled by the researcher to investigate its effect on another variable. It is considered the "cause" in a cause-and-effect relationship. - **Example**: In an experiment to determine how different amounts of sunlight affect plant growth, the amount of sunlight each plant receives is the independent variable.