Why might you choose a scale over an index?
A)You are using nominal variables.
B)You are using ordinal variables.
C)You find an intensity structure in your data.
D)You are using more than one variable.
E)You find you have missing data points.

Question

Quizplus · Accepted Answer

If intensity structure is found in the data, a scale (likely interval or ratio) would be the best choice. An index is typically used to combine multiple variables into a single score, whereas a scale measures a single variable. The other options (A, B, D, E) do not provide enough information to determine whether a scale or index would be preferred.

Why Might You Choose a Scale Over an Index