Depending on the context, independent variables are also known as predictor variables, regressors, controlled variables, manipulated variables, explanatory variables, or input variables.
The dependent variable is also known as the response variable, the regressand, the measured variable, the responding variable, the explained variable, the outcome variable, the experimental variable or the output variable.
When there is only one independent variable and its values and those of the dependent variable are real numbers, then one conventionally draws the graph of the function with values of the independent variable on the horizontal axis—the x-axis—and the values of the dependent variable on the vertical axis—the y-axis (see Cartesian coordinates).
In calculus, the identification of the independent and dependent variable is significant, since the rate of change, or derivative, of the dependent variable is calculated with respect to the independent variable.
In the design of experiments, independent variables are those whose values are controlled or selected by the person experimenting (experimenter) to determine its relationship to an observed phenomenon (the dependent variable). In such an experiment, an attempt is made to find evidence that the values of the independent variable determine the values of the dependent variable (that which is being measured). The independent variable can be changed as required, and its values do not represent a problem requiring explanation in an analysis, but are taken simply as given. The dependent variable on the other hand, usually cannot be directly controlled.
Controlled variables are also important to identify in experiments. They are the variables that are kept constant to prevent their influence on the effect of the independent variable on the dependent. Every experiment has a controlling variable, and it is necessary to not change it, or the results of the experiment won't be valid.
Response of Plasma Leptin Concentration to Jugular Infusion of Glucose or Lipid Is Dependent on the Stage of Lactation of Holstein Cows1
Dec 01, 2003; ABSTRACT In this study we investigated the hormonal and metabolite responses to isoenergetic jugular infusions of glucose or...
WIPO PUBLISHES PATENT OF BUNDESDRUCKEREI FOR "METHOD FOR PRODUCING A SECURITY DOCUMENT HAVING A SECURITY FEATURE THAT IS DEPENDENT ON THE VIEWING ANGLE AND SECURITY DOCUMENT" (GERMAN INVENTORS)
Apr 21, 2012; GENEVA, April 21 -- Publication No. WO/2012/049096 was published on April 19. Title of the invention: "METHOD FOR PRODUCING A...