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Econometria1-Transp-tema5-2

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⎛ ⎞<br />

n 2<br />

1 ∂ ln f( p; Yi)<br />

∑ ⎜−2⎟ n ⎜ i= 1 ∂p<br />

⎟ true<br />

p<br />

p<br />

⎝ ⎠<br />

1 ⎛∂ln f( p; Y ) ⎞<br />

n<br />

∑<br />

i<br />

⎜ ⎟<br />

⎜ i 1 ∂p<br />

⎟ true<br />

p<br />

d<br />

n =<br />

⎝ ⎠<br />

Poniendo todo junto,<br />

n ( ˆ MLE<br />

p – p true ) ≈<br />

⎡ n 2<br />

1 ⎛ ∂ ln f( p; Yi)<br />

⎞⎤<br />

⎢ ∑⎜−2⎟⎥<br />

⎢n ⎜ i= 1 ∂p<br />

⎟ true<br />

⎣ ⎝ p ⎠⎥⎦<br />

→ a ( constante) (LDGN)<br />

→ N(0, σ ) (TCL) (¿Por qué?)<br />

2<br />

ln f<br />

−1<br />

⎡ n 1 ⎛∂ln f( p; Yi)<br />

⎞⎤<br />

⎢ ∑<br />

⎜ ⎟⎥<br />

⎢ n ⎜ i= 1 ∂p<br />

⎟ true<br />

⎣ ⎝ p ⎠⎥⎦<br />

9-45

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