qreg_postestimation.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{smcl}
{* 24mar2005}{...}
{cmd:help qreg postestimation}{...}
{right:dialogs:  {dialog qreg_p:predict for qreg, iqreg, bsqreg}}
{right:{dialog sqreg_p:predict for sqreg}{space 14}}
{right:also see:  {helpb qreg}{space 27}}
{hline}

{title:Title}

{p2colset 5 32 34 2}{...}
{p2col :{hi:[R] qreg postestimation} {hline 2}}Postestimation tools for qreg,
iqreg, bsqreg, and sqreg{p_end}
{p2colreset}{...}


{title:Description}

{pstd}
The following postestimation commands are available for {cmd:qreg},
{cmd:iqreg}, {cmd:bsqreg}, and {cmd:sqreg}:

{synoptset 11}{...}
{p2coldent :command}description{p_end}
{synoptline}
INCLUDE help post_adjust1
{synopt :{helpb estat}}VCE and estimation sample summary{p_end}
INCLUDE help post_estimates
INCLUDE help post_lincom
INCLUDE help post_linktest
INCLUDE help post_mfx
INCLUDE help post_nlcom
{synopt :{helpb qreg postestimation##predict:predict}}predictions, residuals, influence statistics, and other diagnostic measures{p_end}
INCLUDE help post_predictnl
INCLUDE help post_test
INCLUDE help post_testnl
{synoptline}
{p2colreset}{...}


{marker predict}{...}
{title:Syntax for predict}

{phang}
For {cmd:qreg}, {cmd:iqreg}, and {cmd:bsqreg}

{p 8 16 2}
{cmd:predict} {dtype} {newvar} {ifin}
	[{cmd:,} [{opt xb}{c |}{opt stdp}{c |}{opt r:esiduals}]]

{phang}
For {cmd:sqreg}

{p 8 16 2}
{cmd:predict} {dtype} {newvar} {ifin}
	[{cmd:,} {cmdab:eq:uation:(}{it:eqno}[{cmd:,}{it:eqno}]{cmd:)}
          {it:statistic}]

{synoptset 13 tabbed}{...}
{synopthdr :statistic}
{synoptline}
{syntab :Main}
{synopt :{opt xb}}linear prediction; the default{p_end}
{synopt :{opt stdp}}standard error of the linear prediction{p_end}
{synopt :{opt stddp}}standard error of the difference in linear predictions{p_end}
{synopt :{opt r:esiduals}}residuals{p_end}
{synoptline}
{p2colreset}{...}
INCLUDE help esample


{title:Options for predict}

{phang}{opt xb}, the default, calculates the linear prediction.

{phang}{opt stdp} calculates the standard error of the linear prediction.

{phang}{opt stddp} is allowed only after you have fitted a model using
{cmd:sqreg}.  The standard error of the difference in linear predictions
between equations 1 and 2 is calculated.

{phang}{opt residuals} calculates the residuals, that is, y - xb.

{phang}{cmd:equation(}{it:eqno}[{cmd:,}{it:eqno}]{cmd:)} specifies the
equation to which you are making the calculation.  

{pmore} {opt equation()} is filled in
with one {it:eqno} for options {opt xb}, {opt stdp}, and {opt residuals}.
{cmd:equation(#1)} would mean that the calculation is to be made for the first
equation, {cmd:equation(#2)} would mean the second, and so on.  Alternatively,
you could refer to the equations by their names.  {cmd:equation(income)} would
refer to the equation named "income" and {cmd:equation(hours)} to the equation
named "hours".

{pmore} If you do not specify {opt equation()}, results are the same as if you
had specified {cmd:equation(#1)}.

{pmore}To use {opt stddp}, you must specify two equations.  You might specify
{cmd:equation(#1, #2)}, or {cmd:equation(q80, q20)} to indicate the 80th and
20th quantiles.


{title:Examples}

{phang}{cmd:. qreg price weight length foreign}{p_end}
{phang}{cmd:. qreg}{p_end}
{phang}{cmd:. predict hat}{p_end}
{phang}{cmd:. predict r, resid}{p_end}


{title:Also see}

{psee}
Manual:  {bf:[R] qreg postestimation}

{psee}
Online:  {helpb qreg};{break}
{helpb adjust}, {helpb estimates}, {helpb lincom},
{helpb linktest}, {helpb mfx}, {helpb nlcom},
{helpb predictnl}, {helpb test}, {helpb testnl}
{p_end}