If the two lines of regression of a bivariate distribution coincide, then the correlation co-efficient `rho` satisfies

The two lines of regression meet at

The two lines of regression meet at

Can the two lines of regression be parallel?

The two line of regression are perpendicular if

The regression coefficients of a bivariate distribution are -0.64 and -.36 . Then the correlation coefficient of the distribution is

Find the regression coefficient b_(yx) and b_(xy) and the two lines of regression for the following data.Also compute the correlation coefficient

Consider the following statements : 1. If the correlation coefficient r_(xy)=0 , then the two lines of regression are parallel to each other. 2. If the correlation coefficient r_(xy)=pm1 , then the two lines of regression are perpendicular to each other. Which of the above statements is/are correct?

If two lines of regression are perpendicular, then the correlation coefficient r is