CHES (Certified Health Education Specialist) Practice Exam 2025 - Free Health Education Specialist Practice Questions and Study Guide

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What characterizes ratio level measures?

Only mutually exclusive categories

Categories that are rank ordered without a zero point

Absolute zero, allowing for distance measurement

Ratio level measures are characterized by the presence of an absolute zero, which allows for the measurement of distances between values. This means that not only can you categorize and rank order the data, but you can also express the exact amount of difference between values. For example, in a ratio measurement of weight, a weight of zero denotes the absence of the object being measured, and a weight of 10 kg is twice as heavy as 5 kg, illustrating this ability to measure distances.

This characteristic distinguishes ratio level measures from other levels, such as nominal, which only involves categorization without ranking, and ordinal, which involves rank ordering but lacks a meaningful zero point. Understanding this concept is essential for correctly interpreting and utilizing data in health education and statistical analyses.

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Categorization without any ranks

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