Econometria1-Transp-tema5-2
Econometria1-Transp-tema5-2
Econometria1-Transp-tema5-2
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Recuerda que:<br />
Por tanto,<br />
y<br />
y<br />
∂<br />
2<br />
∂<br />
f(p;Yi) =<br />
p (1 p) −<br />
−<br />
Y 1 Y<br />
i i<br />
ln f(p;Yi) = Yilnp + (1–Yi)ln(1–p)<br />
ln f ( pY , i )<br />
∂p<br />
ln f ( pY , i )<br />
2<br />
∂p<br />
=<br />
Yi 1−<br />
Yi<br />
− =<br />
p 1−<br />
p<br />
Y 1−<br />
Y<br />
p (1 − p)<br />
i i<br />
= − − 2 2<br />
Yi−p p(1 − p)<br />
⎛ Y 1−<br />
Y ⎞<br />
⎜<br />
p (1 − p)<br />
⎟<br />
⎝ ⎠<br />
i i<br />
= − + 2 2<br />
9-47
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