A two-variable regression with no intercept is given as:
$\displaystyle Y_i=B_2X_i+u_i$
Show that the R-squared ($\displaystyle R^2$) for this model is equal to zero.
I think I should show that the covariance of X and Y are zero?
A two-variable regression with no intercept is given as:
$\displaystyle Y_i=B_2X_i+u_i$
Show that the R-squared ($\displaystyle R^2$) for this model is equal to zero.
I think I should show that the covariance of X and Y are zero?