Variables in psychology play a critical role in the research process. By systematically changing some variables in an experiment and measuring what happens as a result, researchers can learn more ...

Controlled variables – The variables that scientists keep the same during an experiment to make sure that a test is fair. Dependant variables – The variable that a scientist measures or observes.

The main variables in a science experiment are the independent variable, the dependent variable and the control variables. The independent variable is what we change or control in the experiment.

Then an example of variable selection with four response variables and two methods is given and we conclude by making some recommendations for their routine use. The Statistician joined the Journal of ...

A random variable is one whose value is unknown or a function that assigns values to each of an experiment’s outcomes. A random variable can be discrete or continuous.

We submit our recent systemic democratic peace research to the control variable doctrine of James Lee Ray, as codified in his 2003 treatise. In particular, we seek to determine whether international ...