The scale of measurement which has no order, distance and unique origin is known as which one of the following?

Correct option is A

The correct answer is (a) Nominal scale.
A Nominal scale is the most basic level of measurement. It is used strictly for labeling or categorizing data into distinct groups without any quantitative value. Because these categories are purely descriptive (e.g., gender, hair color, or country names), there is no inherent order or ranking between them. Furthermore, since the numbers assigned are just "names," there is no measurable distance between values and no unique origin (true zero) that signifies the absence of a trait.
Information booster
· Classification: Its sole purpose is to categorize data into mutually exclusive labels.
· No Arithmetic: You cannot perform addition or subtraction because the values lack numerical significance.
· Frequency: Statistical analysis is limited to mode, percentages, and chi-square tests.
· Qualitative: It represents qualitative rather than quantitative differences.
Additional Knowledge
· Ordinal scale provides a specific rank or order but lacks consistent distance between points.
· Interval scale has order and equal intervals (distance), but lacks a true zero point.
· Ratio scale is the most advanced, featuring order, equal distance, and a unique origin (absolute zero).