Discussion
From statistical point of view which measurement scale is of lowest level scale ?
Answer: C
The lowest level scale is the nominal scale.
Stevens's four levels of measurement, from lowest to highest, are nominal, ordinal, interval and ratio. A nominal scale only names or classifies, such as gender, religion or blood group. The numbers attached have no order or size, so only counting and the mode can be used.
The ordinal scale adds rank order, the interval scale (printed 'Internal scale') adds equal distances between values, and the ratio scale adds a true zero, which makes it the highest level.
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