Dear all, <br><br>I could find the formula explaining how to calculate McFadden R-squared in the gretl user&#39;s guide.<br>I tried to replicate it in Probit model but I fail to get the same value. Is anything wrong with my calculation as follows.<br>
Thanks<br><br>Yi-Nung Yang<br><br>&lt;script&gt;<br>nulldata 10<br>set seed 89675430  <br>series u=normal()<br>series y=(u&gt;0)<br>series x = uniform()<br><br>probit y const x <br>scalar lnL=$lnl<br><br>probit y const <br>
scalar lnL0=$lnl<br><br># McFadden R-squared as in Greene&#39;s Econometric Analysis<br>scalar McR2= 1-lnL/lnL0<br><br>&lt;/script&gt;<br>