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Interval Level of Measurement

Definition

Interval level of measurement is a type of measurement scale that not only categorizes data but also allows for meaningful comparisons between the values. It has equal intervals between the numbers, but there is no true zero point.

Analogy

Think of interval level of measurement like temperature on the Celsius scale. The intervals between each degree are equal, and you can compare temperatures (e.g., 20°C is hotter than 10°C), but 0°C doesn't represent an absence of temperature.

Related terms

Nominal Level of Measurement: This refers to a measurement scale where data is categorized into distinct categories without any numerical value assigned.

Ordinal Level of Measurement: This refers to a measurement scale where data is categorized into distinct categories with some order or ranking, but the differences between values may not be equal.

Ratio Level of Measurement: This refers to a measurement scale that has all the properties of interval level, but it also has a true zero point which represents an absence or complete lack of the measured attribute.