Notes on Regression Discontinuity Methods - [athena.sas.upenn ...
Notes on Regression Discontinuity Methods - [athena.sas.upenn ...
Notes on Regression Discontinuity Methods - [athena.sas.upenn ...
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Boundary bias<br />
plimˆµr (c)=<br />
c+h<br />
c µ(x)f (x)dx<br />
c+h<br />
c f (x)dx<br />
= µ r(c) + limx↓c<br />
∂<br />
∂x µ(x)h 2 + O(h2 )<br />
• bias is linear in the bandwidth, h.<br />
• At interior points, bias is usually of order h 2 .C<strong>on</strong>vergenceofbias<br />
to 0 is slower at boundary points.