Paper 1 · Research Aptitude
UGC NET December 2022 (24.02.2023) Shift-II
Which of the following scales of measurement contains an absolute zero?
ANominal
BOrdinal
CInterval
DRatio ✓ Correct
Correct answer: (D) Ratio — The ratio scale contains an absolute zero, so the answer is the ratio scale.
Explanation
★The ratio scale contains an absolute zero, so the answer is the ratio scale.
★The ratio scale is the highest level of measurement.
★It has equal intervals and also a true, meaningful zero point.
★This absolute zero means the value zero stands for a real absence of the quantity.
★So ratios between values become meaningful on this scale.
★The nominal, ordinal and interval scales do not have such an absolute zero.
★So the answer is the ratio scale.
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