In science, a variable is something that can be changed, measured or controlled in an experiment. Scientists look at variables to understand how they affect things. A variable is any one of the things ...

Experimental design plays a crucial role in various research areas, providing a systematic framework for conducting experiments and obtaining reliable and interpretable results. Experimental design is ...

Time-dependent variables can be used to model the effects of subjects transferring from one treatment group to another. One example of the need for such strategies is the Stanford heart transplant ...