[ 1 syll. jac(k), ja-ck ] The baby boy name Jack is also used as a girl name, but it is much more common for boys. Its pronunciation is JHAHK â . Jack is largely used in the English and Dutch languages, and its origin is English and Hebrew.
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.
Controlled variables are used to reduce the possibility of any other factor influencing changes in the dependent variable, known as confounding variables. In the above example, the plants must all be given the same amount of water, or this factor could obscure any link between temperature and growth.