control variable

(redirected from Control variables)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial.
Related to Control variables: independent variable

control variable

[kən′trōl ‚ver·ē·ə·bəl]
(control systems)
One of the input variables of a control system, such as motor torque or the opening of a valve, which can be varied directly by the operator to maximize some measure of performance of the system.

control variable

In programming, a variable that keeps track of the number of iterations of a process. Its value is incremented or decremented with each iteration, and it is compared to a constant or other variable to test the end of the process or loop.
References in periodicals archive ?
The same control variables from Table II are included, but not reported.
H0: There is no significant difference between the different parts of the service in the control variable.
SIZE: company size as a control variable (natural logarithm of sale income)
The control variables are measured in levels as of year t and are identical to those previously defined.
effect (+) capital/labor control variables (+) manufacturing control variables(+) urban control variables (-) population density control variables (+) unemployment control variables (-) college graduates control variables (?
The G effect remains robust to these additional control variables.
For these firms, I added to the regression a control variable defined as the proportion of long-term debt that is secured.
The problems related to trying multiple versions of the same variable and multiple combinations of control variables are grouped under the name "data snooping.
The control variables were selected on the basis of a survey of prior research on the determinants of social performance (Ullman, 1985).
As seen in Figure 2, the debt-service ratio adds incremental power to the ability of the control variables in predicting spending growth.
For both regression equations, control variables were entered as possible predictors of behavioural skills and behaviour.
Such a model is not constructed by merely assembling the claims advanced by cluster care supporters and criticisms leveled by opponents, nor is it derived by clever manipulation of a set of conveniently available and intuitively plausible control variables.