"measured variables" refer to characteristics or factors that can be observed, quantified, or calculated in a scientific study or experiment. These variables are often used to collect data and analyze results. Full definition
Cups bring in a whole set of measuring variables, and tend to get hopeful macaron bakers into trouble: \ (littleboxbrownie.com)
A campaign to the Pine Island Glacier ice shelf led by NASA glaciologist Bob Bindschadler measured variables such as water temperature and melting rate at the underside of the ice shelf. (nasa.gov)
Correlations among measured variables in ICPs (below diagonal) and partners (above the diagonal) (academic.oup.com)