Q.Assertion (A) : The existence of a correlation between two variables can be shown to exist only when there is variability. Reason (R) : If one of the variables is a constant, with no variability, then the correlation coefficient is not even defined. Codes :
Correct answer: Both (A) and (R) are true and (R) is the correct explanation.
Explanation
The existance of a correlation between two variables can be shown to exist only when there is variability. If the one of the variable is constant, with no variability then the correlation coefficient is not even defined.
The existance of a correlation between two variables can be shown to exist only when there is variability. If the one of the variable is constant, with no variability then the correlation coefficient is not even defined.