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:

Related MCQs

• When there is perfect correlation, the value of the correlation coefficient is:
• Karl Pearson’s coefficient of correlation method of measuring correlation is
• When the correlation coefficient r = ±1, the two regression lines:
• 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:
• As the value of X increases, if Y also increases, then coefficient of correlation will be
• As the value of X increases, if value of Y decreases, then coefficient of correlation will be
• The correlation coefficient between X and Y will have positive sign when
• The value of the correlation coefficient lies between:
• In case there is no relation between the variables, value of coefficient of correlation will be:
• The relationship between x and y is y = 2x + 1. The correlation between x and y is: