Noun
interval variable (plural interval variables)
(statistics) An ordinal variable with the additional property that the magnitudes of the differences between two values are meaningful.
Examples
Absolute time:10PM (today) > 8PM (today)10PM (today) - 8PM (today) = 2 hours8PM (today) + 2 hours = 10pm (today)2PM + 10PM - not defined10PM / 8PM - not defined10PM * 8PM - not defined10PM * 2 hours - not defined