Discussion
Identify correct sequence of the Steven's four levels of measurement scales :
Answer: D
The correct sequence is Nominal; Ordinal; Interval; Ratio.
S.S. Stevens (1946) arranged the levels of measurement from the least to the most informative. Nominal scales only name categories (gender, subject). Ordinal scales add rank order (first, second, third). Interval scales add equal distances between points but have no true zero (temperature in Celsius). Ratio scales add a true zero, so ratios are meaningful (number of books, age).
Each level keeps the properties of the one before it, which fixes the order. The other options place ordinal, interval or ratio out of this cumulative sequence.
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