Match List-I with List-II:


Choose the correct answer from the options given below:

Correct option is D

The correct answer is (d) A-III, B-I, C-IV, D-II. Here is the correct matching:
· A. Nominal – III. Ethnicity: Nominal variables classify data into categories without any order. Ethnicity is a nominal variable as it categorizes individuals by ethnic groups without any rank or order.
· B. Ordinal – I. Satisfaction level: Ordinal variables have a meaningful order or ranking, but the intervals between ranks are not consistent. Satisfaction levels (e.g., satisfied, neutral, dissatisfied) are ordinal, as they indicate order but do not measure exact differences.
· C. Interval – IV. Year of death: Interval variables have ordered categories with consistent intervals between them but no true zero point. "Year of death" is an interval variable as years are equidistant, but the zero point (0 AD) is arbitrary.
· D. Ratio – II. Weight: Ratio variables have all the properties of interval variables, plus a true zero point. Weight is a ratio variable because it has a true zero and allows for meaningful comparisons (e.g., someone weighing 0 kg truly has no weight).
Information Booster: 1. Nominal Variables: Used to label categories without any inherent order (e.g., gender, ethnicity).
2. Ordinal Variables: Reflect a ranked order, like satisfaction or educational level, without exact interval consistency.
3. Interval Variables: Have equal intervals and arbitrary zero, like temperature or year.
4. Ratio Variables: Have meaningful zero and consistent intervals, such as weight or height.