<P> The control variable ( or scientific constant ) in scientific experimentation is the experimental element which is constant and unchanged throughout the course of the investigation . The control variable strongly influences experimental results , and it is held constant during the experiment in order to test the relative relationship of the dependent and independent variables . The control variable itself is not of primary interest to the experimenter . </P>
<P> The control variable ( or scientific constant ) in scientific experimentation is the experimental element which is constant and unchanged throughout the course of the investigation . The control variable strongly influences experimental results , and it is held constant during the experiment in order to test the relative relationship of the dependent and independent variables . The control variable itself is not of primary interest to the experimenter . </P>
what is the purpose of the control variable
what is the purpose of the control variable
in order to test the relative relationship of the dependent and independent variables
in order to test the relative relationship of the dependent and independent variables