ratio variable - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

ratio variable (plural ratio variables)

(statistics) A variable with the features of interval variable and, additionally, whose any two values have meaningful ratio, making the operations of multiplication and division meaningful.

Examples
Speed 10 meters per second > 8 meters per second 10 mps - 8 mps = 2 mps 8 mps + 2 mps = 10 mps 10 mps / 8 mps = 1.25 (times as fast) 1.25 * 8 mps = 10 mps 10 mps * 8 mps = not defined