If the coefficient of correlation between x and y is $0.5$, the covariance is $16$ and if the standard deviation of x is $4$ then Standard deviation of y is:

The correct answer is Option b: $8$. MTP Sep 24 Series I

Correlation and RegressionMTP Sep 24 Series IQuestion 3673 of 179

If the coefficient of correlation between x and y is $\displaystyle 0.5$ , the covariance is $\displaystyle 16$ and if the standard deviation of x is $\displaystyle 4$ then Standard deviation of y is:

\displaystyle 4

\displaystyle 8

\displaystyle 16

\displaystyle 64

For any discrepancies in this question, email contact@cadada.in

✅ Option b — $\displaystyle 8$

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.

Exam Strategy Tip

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

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

Practice all 179 questions with instant feedback, earn XP, track your streaks, and ace your CA Foundation exam.