Which scale allows ranking but does not assume equal intervals between values?

• A. Ordinal
• B. Nominal
• C. Interval
• D. Ratio

Answer: (A)

The important idea here is how measurement scales handle order and spacing. An ordinal scale provides a rank order, so you can say that one item is higher or lower than another, but you cannot assume the gaps between ranks are equal. That means you know A is better than B and B is better than C, yet the difference in value between A and B might not be the same as between B and C. This makes ordinal ideal for places like rankings or Likert-type responses where order matters but exact distances do not.

In contrast, nominal scales categorize without any inherent order (like categories or labels), interval scales assume equal spacing between values (but typically lack a true zero), and ratio scales have both equal spacing and a true zero. So the property described—ranking without guaranteed equal intervals—fits an ordinal scale.