An old man with hypeension and BP 210/110 mm Hg is classified into Severe hypeension. Scale used is: (A) Nominal, (B) Ordinal, (C) Interval, (D) Ration
Answer is B. ORDINAL SCALEScale on which data is shown simply in order of magnitude, since there is no standard of measurement of differences - Categories are organized as a continuum - In the given question, If BP is measured as absolute quantified numbers (E.g. BP 210/110), it should be measured on Metric scale If BP is categorized as Mild-Moderate-Severe, it will become Ordinal scale