Which of the following variables is measured on the ordinal scale-
Correct Answer: Severity of anemia
Description: When data is ranked e.g. mild, moderate, severe → ordinal scale is used. Therefore the severity of anemia is measured on the ordinal scale.
Type of anemia can be divided into qualitative categories (Macrocytic/microcytic, hemolytic/non-hemolytic) → Nominal scale is used.
Serum ferritin and hemoglobin are quantitative variables with a possible absolute zero value → Ratio scale is used.
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