What are independent variables? Give an example.
Independent variables are the variables that are manipulated or controlled by the researcher in an experiment. They are factors that are changed to observe how they influence the dependent variable.
Example: In a study examining the effect of studying duration on exam performance, the independent variable would be the duration of studying. The researcher can manipulate this variable by assigning different groups of participants to study for different lengths of time (e.g., 1 hour, 3 hours, or 5 hours).
Independent variables are factors or conditions that are manipulated or controlled in an experiment. They are factors that can potentially influence or affect the outcome or dependent variable being measured. The independent variable is deliberately changed or varied to observe the effect it has on the dependent variable.
For example, let's say a scientist wants to investigate the effect of temperature on plant growth. In this case, the independent variable would be the temperature. The scientist could set up different temperature conditions and observe how each level of temperature affects the growth of the plants. By manipulating the independent variable (temperature), the scientist can determine its impact on the dependent variable (plant growth).
Independent variables are factors or conditions that are manipulated or changed by the researcher in an experiment. They are the variables that are believed to have an effect on the dependent variable, which is the variable being measured or observed. The independent variable is often plotted on the x-axis of a graph.
An example of an independent variable could be the amount of fertilizer used on plants in an experiment testing plant growth. In this case, the researcher can vary the amount of fertilizer applied to different groups of plants. The independent variable, in this case, is the amount of fertilizer since it is being intentionally manipulated by the researcher.