CA Foundation · Quantitative Aptitude · Statistical Description of Data
A market researcher in Bengaluru records each respondent's preferred mobile network as Jio, Airtel, Vi or BSNL. On which scale of measurement is this variable measured?
The preferred mobile network is measured on the nominal scale. The values are just names of categories such as Jio or Airtel, with no natural ranking, no meaningful distance between them and no true zero. Nominal data can only be classified and counted.
- ANominal scaleCorrect
- BOrdinal scale
- CInterval scale
- DRatio scale
Explanation
The network names are only labels placed in categories. They have no natural order and no meaningful differences or ratios. A variable with unordered categories is measured on the nominal scale. Ordinal would need a ranking among the categories.
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