Quantitative measures can be grouped into categories for analysis and retain properties of their measurement.
For example:
What age range are you in?
(Ordinal)
A. 15-19
B. 20-24
C. 25-29
D. 30-34
E. 35-39
F. 40-44
What is your age?
(Ratio)
\(17,19,24,27,32, 33,43,45,47,52\)