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CA Foundation · Quantitative Aptitude · Statistical Description of Data

A study of 200 employees of a Bengaluru IT firm records the following variables: (P) department (HR, Finance, Tech), (Q) grade of performance rating (A, B, C), (R) monthly salary in ₹, (S) number of dependants. Which option correctly classifies P, Q, R and S in that order?

Department is nominal because the categories have no order, performance grade is ordinal because A, B and C are ranked, salary is a continuous quantitative variable, and number of dependants is discrete since it is counted. This matches nominal, ordinal, continuous, discrete.

  1. ANominal, ordinal, continuous, discreteCorrect
  2. BOrdinal, nominal, continuous, discrete
  3. CNominal, ordinal, discrete, continuous
  4. DNominal, interval, continuous, discrete

Explanation

Department has unranked categories, so it is nominal. Performance grades A, B, C are ranked, so ordinal. Salary is a measured amount treated as continuous, and the number of dependants is a count, hence discrete. Option C swaps discrete and continuous, and option B reverses the first two.

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