It is determined that there is no relationship between the consumption of paper and water in a city.
1 What is the value of the covariance of these variables?
cov(X,Y) = 0
2 What is the linear correlation coefficient?
r = 0
3 Determine the equations of the two regression lines and interpret the relationship.
= k1 , = k2 k1, k2 .
The lines are parallel to the axis and perpendicular to each other.