dependent variable
a variable (often denoted by y ) whose value depends on that of another.
A dependent variable is a variable whose value depends on the independent variable. In scientific experiments and research studies, the dependent variable is the outcome that is being measured or observed. The dependent variable is often denoted as ‘y’ in mathematical models and is the variable that the researcher is interested in understanding.
For example, in a study that investigates the effect of exercise on heart rate, the dependent variable is the heart rate. The independent variable, in this case, is the exercise as it is what causes the dependent variable to vary. The researcher may measure the heart rate before and after exercise to see if there is a change.
It is essential to identify the dependent variable in scientific research because it allows the researcher to examine the relationship between the independent variable and the outcome they are interested in. By manipulating the independent variable, researchers can determine if there is a cause-and-effect relationship between the variables.
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