Correlation and RegressionMCQPYQ June 22Question 3645 of 188
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Which of the following is used to find correlation between two qualitative characteristics

Options

AKarl Pearson
BSpearman rank correlation
CConcurrent deviation
DScatter diagram
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Correct Answer

✅ Option b — Spearman rank correlation

All Options:

  • AKarl Pearson
  • BSpearman rank correlation
  • CConcurrent deviation
  • DScatter diagram

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Detailed Solution & Explanation

**Method for qualitative characteristics:** **Karl Pearson's method:** Requires actual numerical (quantitative) data — not suitable for qualitative data. **Spearman's Rank Correlation:** Used when: - Data is qualitative (cannot be measured precisely) - Variables involve subjective rankings (beauty, intelligence, honesty) - One or both variables are ordinal - The data can be ranked in order **Process for qualitative data using Spearman's method:** 1. Assign ranks to observations based on qualitative assessment 2. Find difference in ranks di\displaystyle d_i for each pair 3. Apply formula: rs=1−frac6sumd2n(n2−1)\displaystyle r_s = 1 - \\frac{6\\sum d^2}{n(n^2-1)} **Concurrent deviation:** Only gives a rough measure, not specifically for qualitative data. **Scatter diagram:** Only for quantitative data plotted graphically. Hence, **Option B** is the correct answer.

About This Chapter: Correlation and Regression

Paper

Paper 3: Quantitative Aptitude

Weightage

4-6 Marks

Key Topics

Correlation Coefficient, Regression Equations

This chapter covers Correlation Coefficient, Regression Equations and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.

View Official ICAI Syllabus

Exam Strategy Tip

This topic carries 4-6 Marks weightage. Focus on understanding core concepts rather than memorizing.

Key Concepts to Understand

Correlation

A statistical measure that expresses the extent to which two variables are linearly related.

Related Comparison Tables

Correlation vs Regression: Statistics for CA Foundation

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