Question

Which scale of measurement are the following examples (nominal, ordinal, interval, or ratio)? Select the best answer.

Length or width of a room

a. nominal

b. ordinal

c. interval

d. ratio

Answer 1

Option d : ratio

Length or width of a room is measured in numeric values, it is not a categorical variable hence it is not an example of nominal or ordinal scale of measurement.

Ratio is a scale which contains absolute zero value, here a zero length or width of a room will mean absence of room.

Length or width can be measure into feet, centimeter or meter or any other unit and these units have a true zero value, hence it is an example of ratio scale of measurement

(it is not an example of interval scale of measurement as interval scale does not have true zero value, for example temperature in degree celcius, zero degree celcius temperature is 32 degrees of fahrenhegiht.)