If a researcher needs to make comparisons of absolute magnitude, a ________ scale must be used.
A)pictorial scale.
B)semantic differential scale.
C)ratio scale.
D)constant sum scale.
E)none of the above.

Question

Quizplus · Accepted Answer

A ratio scale is the only scale that allows for comparisons of absolute magnitude. This is because ratios can be formed with interval data (such as measuring height in centimeters), which is not possible with other types of scales. Pictorial, semantic differential, and constant sum scales do not provide numerical values that can be used to form ratios.

If a Researcher Needs to Make Comparisons of Absolute Magnitude