The main difference between an interval and a ratio scale is that only one of them:
A)includes an absolute zero.
B)uses equal units of measurement.
C)supports the use of statistical analyses.
D)is used in research with human subjects.

Question

Quizplus · Accepted Answer

The main difference between an interval and a ratio scale is the presence of an absolute zero point. Only ratio scales have an absolute zero, which represents a complete absence of the measured attribute. Interval scales do not have an absolute zero, which means that the ratios between values cannot be calculated. Both scales use equal units of measurement and can support statistical analyses, but only ratio scales allow for meaningful ratio comparisons. The use of scales is not determined by the research population but by the nature of the variables being measured.

The Main Difference Between an Interval and a Ratio Scale