https://communities.sas.com/t5/Statistical-Procedures/No-standard-error-in-two-way-fixed-regression-output/m-p/676741#M32438 <P>I am estimating a two-way FE model as follows:</P> <PRE><CODE class=" language-sas">proc panel data = example; id gvkey rankyear; model y = readj_pl_vol readj_mi_vol / fixtwo noint hccme = 3 cluster; run; quit;</CODE></PRE> <P>The output I get is as follows:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="shenflow_0-1597415110575.png" style="width: 400px;"><img src="https://communities.sas.com/t5/image/serverpage/image-id/48227i11BFEC43B91C15A7/image-size/medium?v=v2&amp;px=400" role="button" title="shenflow_0-1597415110575.png" alt="shenflow_0-1597415110575.png" /></span></P> <P>&nbsp;</P> <P>Why do I get a coefficient estimate for the second variable, but no standard error?</P> Fri, 14 Aug 2020 14:25:24 GMT shenflow 2020-08-14T14:25:24Z https://communities.sas.com/t5/Statistical-Procedures/No-standard-error-in-two-way-fixed-regression-output/m-p/676741#M32438 <P>I am estimating a two-way FE model as follows:</P> <PRE><CODE class=" language-sas">proc panel data = example; id gvkey rankyear; model y = readj_pl_vol readj_mi_vol / fixtwo noint hccme = 3 cluster; run; quit;</CODE></PRE> <P>The output I get is as follows:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="shenflow_0-1597415110575.png" style="width: 400px;"><img src="https://communities.sas.com/t5/image/serverpage/image-id/48227i11BFEC43B91C15A7/image-size/medium?v=v2&amp;px=400" role="button" title="shenflow_0-1597415110575.png" alt="shenflow_0-1597415110575.png" /></span></P> <P>&nbsp;</P> <P>Why do I get a coefficient estimate for the second variable, but no standard error?</P> Fri, 14 Aug 2020 14:25:24 GMT https://communities.sas.com/t5/Statistical-Procedures/No-standard-error-in-two-way-fixed-regression-output/m-p/676741#M32438 shenflow 2020-08-14T14:25:24Z https://communities.sas.com/t5/Statistical-Procedures/No-standard-error-in-two-way-fixed-regression-output/m-p/676746#M32439 <P>Possibly scaling of the variables that causes <A href="https://en.wikipedia.org/wiki/Arithmetic_underflow" target="_self">arithmetic underflow</A></P> Fri, 14 Aug 2020 14:44:03 GMT https://communities.sas.com/t5/Statistical-Procedures/No-standard-error-in-two-way-fixed-regression-output/m-p/676746#M32439 PaigeMiller 2020-08-14T14:44:03Z