Match List - I with List - II.

List-I	List- II
A.	Nominal Scale	I.	Ranking a trait
B.	Ordinal Scale	II.	True zero
C.	Interval Scale	III.	Assigning numbers to categories
D.	Ratio Scale	IV.	Scale of equal units

Choose the correct answer from the options given below:

Correct option is B

The correct matching of scales with their descriptions is:
A - III: Nominal Scale - Assigning numbers to categories
B - I: Ordinal Scale - Ranking a trait
C - IV: Interval Scale - Scale of equal units
D - II: Ratio Scale - True zero
Each scale of measurement is used for different types of data and purposes in statistical analysis and research design.
Information Booster:
1. Nominal Scale: Used for labeling variables without any quantitative value. Example: Gender, race.
2. Ordinal Scale: Provides order among values but the intervals between the values are not meaningful. Example: Rankings in a race.
3. Interval Scale: Numeric scales in which intervals between numbers are consistent but there is no true zero point. Example: Temperature in Celsius.
4. Ratio Scale: Similar to the interval scale but with a meaningful zero point, allowing for statements about how many times higher one score is compared to another. Example: Height, weight.
5. Levels of Measurement: Understanding the levels of measurement is crucial for choosing the appropriate statistical tests.
6. Data Analysis: Each type of scale requires different methods of data analysis.
Additional Information:
· Nominal Scale (III): Assigns numbers to categories, but the numbers have no numerical significance.
· Ordinal Scale (I): Ranks items, but does not specify the magnitude of difference between them.
· Interval Scale (IV): Uses equal intervals between points on the scale but lacks a true zero point.
· Ratio Scale (II): Has both equal intervals and an absolute zero, allowing for a full range of mathematical operations.