An independent variable is something that scientists or researchers intentionally vary or change in an experiment to see if it has an effect on something else. Full definition
Students are also supported to identify and change types of independent variable. (tes.com)
The V6 engines combine direct fuel injections, high compression and dual independent variable cam - timing to deliver impeccable efficiency and performance. (thesupercars.org)
This is a crucial step for most education analysis, because omitted variables correlated with independent variables can cause substantial bias in our estimates. (commons.trincoll.edu)