what is the difference between a control and experimental variable?
234505
The only difference between the two groups is that the independent variable is changed in the experimental group. The independent variable is "controlled" or held constant in the control group. ... The purpose of having a control is to rule out other factors which may influence the results of an experiment.
1226419
Remember, an independent variable is the part of the experiment the scientist changes or controls. The dependent variable is the part of the experiment that reacts to the independent variable. ... A constant is the part that doesn't change during the experiment.
21782
There are three main types of variables in a scientific experiment: independent variables, which can be controlled or manipulated; dependent variables, which (we hope) are affected by our changes to the independent variables; and control variables, which must be held constant to ensure that we know that it's our ...
298648
Experimental Method The key features are control over variables, careful measurement, and establishing cause and effect relationships. An experiment is an investigation in which a hypothesis is scientifically tested.
1359308
A manipulated variable is the independent variable in an experiment. It's called “manipulated” because it's the one you can change. ... The controlled variable is the one that you keep constant. The responding variable or variables is what happens as a result of the experiment (i.e. it's the output variable).
993692
The independent variable is the variable that is not affected by other variables. Instead, it determines the value of other variables (particularly, the dependent variables). In experimental sciences in particular, it is the variable that is manipulated or controlled by the experimenter.
940100
The control variable is the one that is kept constant (not modified), in order not to influence the result of the experiment. The confounding variables are the ones that could influence the result of the experiment together with other variables.
474605
A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist. Why just one?
638542
The Dependent and Independent Variables The independent variable is the variable that is controlled and manipulated by the experimenter. ... The dependent variable is the variable that is measured by the experimenter. In our previous example, the scores on the test performance measure would be the dependent variable.
1060875
The key features are control over variables, careful measurement, and establishing cause and effect relationships. An experiment is an investigation in which a hypothesis is scientifically tested.
435529
Variables. Independent Variable: The force applied to the object. Dependent Variable: The acceleration of the object. Control Variables: The mass of the object.
966366
['A variable is any quantity that you are able to measure in some way. ... ', 'An independent variable is the variable the experimenter controls. ... ', 'A dependent variable is the measurement that changes in response to what you changed in the experiment.']
478977
One is called the dependent variable and the other the independent variable. The independent variable is the variable the experimenter changes or controls and is assumed to have a direct effect on the dependent variable.
1266975
Here are the fundamental differences: Moderator variables are those variables which act like a catalyst in a regression relationship. ... Control variables are those independent variables which are not part of the research study, but their influence cannot be overlooked.
79383
An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.
685146
Dependent and Independent Variables An 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.
1274266
Experimental Method In an experiment, an independent variable (the cause) is manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled.