What is what axis is the independent variable?

In most scientific experiments and research studies, the independent variable is typically represented on the x-axis. The independent variable is the variable that is manipulated or changed by the researcher in order to observe its effect on the dependent variable. This variable is considered to be the cause of any observed changes in the dependent variable.

For example, in a study investigating the relationship between amount of sunlight exposure and plant growth, the independent variable would be the amount of sunlight exposure (measured in hours per day) and would be plotted on the x-axis. The dependent variable in this case would be the plant growth (measured in height or weight) and would be plotted on the y-axis.

The independent variable is often referred to as the predictor variable, treatment variable, or experimental variable, while the dependent variable is referred to as the outcome variable or response variable. The relationship between the independent and dependent variables is what researchers are trying to understand or explain through their experiments.