response variable

noun
UK /rɪˈspɒns ˈveəriəbl/
US /rɪˈspɑːns ˈveriəbl/

The thing you watch or measure to see what happens in an experiment.

In our plant experiment, the height of the plant was the response variable.


OTHER MEANINGS

2. In statistics, the variable whose value is predicted or explained by other variables.

The researchers used test scores as the response variable in their model.

3. In math modeling, the output value that changes when inputs change.

In the equation y = 2x + 1, y is the response variable.

4. The factor that shows the effect of a treatment in a study.

Scientists recorded the response variable after giving the new medicine to the mice.