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.

medio de X = k1 , media de y = k2 k1, k2 pertenece R +.

The lines are parallel to the axis and perpendicular to each other.