Question:medium

Which of the following statements are correct about the correlation co-efficient ?
A. Its value falls between $-1$ and $+1$.
B. Its value changes when the unit of measurement gets changed.
C. It measures only the strength of linear association between variables.
D. It is a dimensionless quantity.
Choose the correct answer from the options given below :

Show Hint

Correlation is unit-free. Whether you measure your data in grams or tons, the correlation coefficient will stay exactly the same.
Updated On: May 20, 2026
  • A, B, C, D
  • A, B, C only
  • A, C, D only
  • A, B, D only
Show Solution

The Correct Option is C

Solution and Explanation

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