The experiment measured multiple responding variables.

The schematic variables in the circuit diagram represent different electrical components.

The state variables of the system are stored in an array.

There are many stock variables in the economy.

Researchers collected data using standardized variables.

There are several variaunces in the data set.

The variators in the factory need to be replaced.

There are several variant readings of this ancient text.

There are many variations of compasses available.

I need to buy some variacs for my electronics project.