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Types of data and levels of measurement

Understand the model, recognise it in a stem, separate the look-alikes, then apply it.

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Levels of measurement Nominal named categories, no order (e.g. diagnosis) Ordinal ordered, unequal gaps (e.g. Likert) Interval equal gaps, no true zero (e.g. °C) Ratio equal gaps, true zero (e.g. weight) more information →
Levels of measurement
01Memory anchor
NOIR: Nominal, Ordinal, Interval, Ratio, order, then equal gaps, then true zero.

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