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

The two line of regression are perpendicular if

The two lines of regression meet at

The two lines of regression meet at

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 the line of regression are parallel to the coordinate axis, then the coefficient of correlation is

Can the two lines of regression be parallel?

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

If the line of regression coincide, then the coefficient of correlation is