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The lecture Levels of Measurement – Data by Raywat Deonandan, PhD is from the course Data.
A question on a survey asks, which chronic health conditions the respondent presently suffers from. What level of measurement is this?
Which level of measurement identifies variables whose values have no mathematical interpretation; they vary in kind or quality, but not in amount?
Numbers represent fixed measuring units and an absolute zero point. Ratios and intervals can often be treated as equivalents, but there is one important difference: numbers can be added, subtracted, multiplied, and divided. Which level of measurement has this factor as an asset?
Which level of measurement allow numbers to be assigned to objects or events and represents the rank order of the entities assessed?
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Very clarifying lecture! Professor Deonandan is pretty concise and informative.