In many research settings, there are two specific classes of variables that need to be distinguished from one another, independent variable and dependent variable. The two variables may be related by cause and effect. The Dependent and independent variables Are sets of logical attributes that are sought to observe and measure as changing factors in scientific or social studies.. The convention is to use the independent variable as the x-axis and the dependent variable as the y-axis. Identifying Independent and Dependent Variables. A health psychologist wants to learn more about how stress influences memory. Even though the definitions of the terms independent and dependent variables may appear to be clear, in the process of analyzing data resulting from actual research, identifying the variables properly might be challenging. An independent variable is measured, manipulated, or selected by the experimenter to determine its relationship to an observed phenomenon. Every experiment has at least two types of variables: an independent and dependent. 2+2=4 Constant (It stayed the same) Independent variable (The one number we changed) Dependent variable (The number that depended on the independent variable) Imagine you want to do an experiment to test what kind of plant food works the best. There is typically a clear and obvious relationship between x and y shown on the graph. An independent variable is the variable that the researchers systematically manipulate in the experiment. In attempting to find out and discover how the world works, man has used experimentation to answer those questions, and one of the most widely used and recognized methods has been that of cause and effect relationships. The researcher could change the independent variable by instead evaluating how age or gender influence test scores. If the independent variable changes, then the dependent variable is affected. The independent variable is the one the experimenter controls. The dependent variable is the variable that changes in response to the independent variable. Graphing Dependent and Independent Variables. Independent and dependent variables are the two most important variables to know and understand when conducting or studying an experiment, but there is one other type of variable that you should be aware of: constant variables. In our math problems we used independent and dependent variables too! In this example, the dependent variable might be test scores on a memory test and the independent variable might exposure to a stressful task. Difference Between Dependent And Independent Variables Although Independent and dependent values have a shared partnership, they are different in a lot of ways, including; Many research studies are aimed at unrevealing and understanding the causes of underlying phenomena or problems with the ultimate goal of establishing a causal relationship between them. In both math and science, dependent and independent variables can be plotted on the x and y axes of a graph.
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