Question

A therapist categorizes the patients visiting his clinic according to their blood groups: A, B, AB, and O. This is an example of ....... data.

• A. Interval
• B. Ordinal
• C. Nominal
• D. Ratio
• E.

Hint:

Nominal data consists of categories without any meaningful order, such as blood groups, gender, and ethnicity.

Answer 1

The Correct Option is C

Step 1: Data Type Classification.
Data can be categorized into nominal, ordinal, interval, and ratio types. Nominal data consists of unordered categories. Ordinal data comprises ordered categories. Interval and ratio data represent measurable quantities.
Step 2: Option Evaluation.
- (1) Interval: Rejected. Interval data exhibits measurable differences but lacks a true zero point. Blood groups are categorical, not numerical.
- (2) Ordinal: Rejected. Ordinal data is rankable. Blood groups do not possess an inherent order.
- (3) Nominal: Accepted. Blood groups (A, B, AB, O) are distinct, unorderable categories, classifying them as nominal data.
- (4) Ratio: Rejected. Ratio data requires a true zero. Blood groups do not have this characteristic.
Step 3: Determination.
The correct classification is (3) Nominal, as blood groups are distinct categories without a natural hierarchy.