The tutor wants to know why some students perform better than others. Imagine that a tutor asks 100 students to complete a maths test. Dependent and Independent VariablesĪn independent variable, sometimes called an experimental or predictor variable, is a variable that is being manipulated in an experiment in order to observe the effect on a dependent variable, sometimes called an outcome variable.
Finally, we explain how variables can be characterised as either categorical or continuous. Second, we discuss the difference between experimental and non-experimental research. First, we illustrate the role of dependent and independent variables. To understand the characteristics of variables and how we use them in research, this guide is divided into three main sections. A variable is not only something that we measure, but also something that we can manipulate and something we can control for. All experiments examine some kind of variable(s).
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