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: Understanding types of data.
Data can be classified into different types, such as nominal, ordinal, interval, and ratio. Nominal data involves categories that cannot be ordered, whereas ordinal data can be ranked. Interval and ratio data involve measurable quantities.
Step 2: Analyzing the options.
- (1) Interval: Incorrect. Interval data involves measurable differences between values, but blood groups are categorical and not on a numerical scale.
- (2) Ordinal: Incorrect. Ordinal data can be ranked, but blood groups are not ranked.
- (3) Nominal: Correct. Blood groups (A, B, AB, O) are categorical and cannot be ordered or ranked, making them nominal data.
- (4) Ratio: Incorrect. Ratio data involves quantities that have a true zero, such as weight or height, which is not the case for blood groups.
Step 3: Conclusion.
The correct answer is (3), as blood groups are an example of nominal data, being distinct categories without an inherent order.