All of the following are fundamental rules of measurement systems, except:
A) Quantities must be additive.
B) Quantities are always defined within some class of objects.
C) The quantities must be measured subjectively.
D) The measures must come from observations of the real world.

Question

Quizplus · Accepted Answer

The fundamental rules of measurement systems do not include the requirement that quantities must be measured subjectively. In fact, objectivity is a key component of valid measurement systems. The other three rules listed are all fundamental principles of measurement: quantities must be additive (i.e. they can be combined in predictable ways), they are defined within some class of objects (i.e. they must be applicable to a specific domain), and they must be based on observations of the real world (i.e. they must be grounded in empirical evidence).

All of the Following Are Fundamental Rules of Measurement Systems