Goodness-of-Fit(continued) We can also think of R as being equal to the squared correlatio n coefficien t between the actual y, and the values y C(-y)6-5 Economics 20- Prof anderson 9Economics 20 - Prof. Anderson 9 Goodness-of-Fit (continued) ( ( )( )) (( ) )(( ) )  − − − − = 2 2 2 2 2 ˆ ˆ ˆ ˆ the actual and the values ˆ the squared correlatio n coefficien t between We can also think of as being equal to y y y y y y y y R y y R i i i i i i