with regard to statistics, the impact that the combined influence of two features is the summarization of their individual impacts, independent of the quantity of the other feature.

ADDITIVE EFFECT: "Additive effects are not always a mere combination of individual effects, but can sometimes measure to be more so than the sum of two individual component effects."
Cite this page: N., Pam M.S., "ADDITIVE EFFECT," in, April 7, 2013, (accessed April 4, 2020).