What is the difference between ordinal, interval and ratio variables? Why should I care? - FAQ 1089 - GraphPad
The Statisticians - Scales of measurements Normally, when one hears the term measurement, they may think in terms of measuring the length of something (ie. the length of a piece of wood)
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Levels of Measurement Scale: Nominal | Ordinal | Interval | Ratio Scales | Examples | Questions - YouTube
![Scales of Measurement - Nominal, Ordinal, Interval, Ratio (Part 1) - Introductory Statistics - YouTube Scales of Measurement - Nominal, Ordinal, Interval, Ratio (Part 1) - Introductory Statistics - YouTube](https://i.ytimg.com/vi/yJpiUHbLKLU/sddefault.jpg)