testvariable

noun
UK /ˈtɛst ˈvɛəriəbl/
US /ˈtɛst ˈvɛriəbl/

A test variable is a thing you change in a test to see what happens.

In our science fair project, the test variable was how much water each plant got.


OTHER MEANINGS

2. In computing, a test variable is a named storage spot used while checking whether a program works.

The programmer set a test variable to true before running the unit test.

3. In statistics, a test variable is a value calculated from sample data and compared with a critical value.

The test variable fell outside the accepted range, so the researchers rejected the null hypothesis.

4. In everyday use, a test variable is any factor you try out to see how it affects an outcome.

The coach treated practice time as a test variable to find the best training schedule.