What are the types of tests associated with the DC motors?
What are the categories of DC motors for which the tests are applicable and what parameters do they measure?
According to my understanding: a) Ordinalb) Nominalc) Ordinald) Ratio
This is a parameter. Because the survey is conducted from the whole population sample; in this case 2514 members.
When measuring the coefficient for liquid, the expansion of the container of the liquid should also be considered, therefore it is harder than solid.