When the correlation coefficient r = ±1, the two regression lines:

Related MCQs

• If b1 and b2 are the regression coefficient of Y on X and that of X on Y respectively and r is the correlation coefficient between X and Y then:
• When there is perfect correlation, the value of the correlation coefficient is:
• Karl Pearson’s coefficient of correlation method of measuring correlation is
• The correlation coefficient between X and Y will have positive sign when
• The correlation coefficient between X and Y is 0.6. Their covariance is 4.8 and the variance of X is 4. Then the variance of Y is:
• The value of the correlation coefficient lies between:
• The coefficient of correlation:
• In case there is no relation between the variables, value of coefficient of correlation will be:
• Coefficient of correlation measure
• Range of the coefficient of correlation is