What is the lowest level of measurement for which it is permissible to calculate Z-scores?
A) nominal
B) ordinal
C) interval/ratio

Question

Quizplus · Accepted Answer

Z-scores require interval or ratio level measurements as they involve converting the raw score to a standard deviation unit based on the mean and standard deviation of the data set. Nominal and ordinal data do not have equal intervals between categories, which is a requirement for calculating z-scores.

What Is the Lowest Level of Measurement for Which It