estat.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}
{* 03may2005}{...}
{cmd:help estat} {right:dialog:  {bf:{dialog estat}}}
{hline}

{title:Title}

{p2colset 5 18 20 2}{...}
{p2col:{hi:[R] estat} {hline 2}}Postestimation statistics{p_end}
{p2colreset}{...}


{title:Syntax}

    {title:Common subcommands}

	Obtain information criteria

	    {cmd:estat ic}

	Summarize estimation sample

	    {cmd:estat} {cmdab:su:mmarize} [{it:eqlist}] [{cmd:,} {help estat##estat_summ_options:{it:estat_summ_options}}]

	Display covariance matrix estimates

	    {cmd:estat} {cmd:vce} [{cmd:,} {help estat##estat_vce_options:{it:estat_vce_options}}]

    {title:Command-specific subcommands}

	{cmd:estat} {it:subcommand1} [{cmd:,} {it:options1} ]

	{cmd:estat} {it:subcommand2} [{cmd:,} {it:options2} ]

		{it:...}

{marker estat_summ_options}{...}
{synoptset 21}
{p2coldent:{it:estat_summ_options}}description{p_end}
{synoptline}
{synopt:{opt eq:uation}}display summary by equation{p_end}
{synopt:{opt lab:els}}display variable labels{p_end}
{synopt:{opt nohea:der}}suppress the header{p_end}
{synopt:{opt nowei:ghts}}ignore weights{p_end}
{synoptline}
{p2colreset}{...}
{p 4 6 2}
{it:eqlist} is rarely used and specifies the variables, with optional equation
name, to be summarized.  {it:eqlist} may be {varlist} or ({it:eqname1}{cmd::}
{it:varlist}) ({it:eqname2}{cmd::} {it:varlist}) {it:...}.  {it:varlist} may
contain time-series operators; see {help tsvarlist}.
{p_end}

{marker estat_vce_options}{...}
{synoptset 21}
{p2coldent:{it:estat_vce_options}}description{p_end}
{synoptline}
{synopt:{opt cov:ariance}}display as covariance matrix; the default{p_end}
{synopt:{opt cor:relation}}display as correlation matrix{p_end}
{synopt:{opt eq:uation(spec)}}display only specified equations{p_end}
{synopt:{opt b:lock}}display submatrices by equation{p_end}
{synopt:{opt d:iag}}display submatrices by equation; diagonal blocks
only{p_end}
{synopt:{opth f:ormat(%fmt)}}display format for covariances and
correlations{p_end}
{synopt:{opt nolin:es}}suppress lines between equations{p_end}
{synoptline}
{p2colreset}{...}


{title:Description}

{pstd}
{opt estat} displays scalar- and matrix-valued statistics after estimation; it
complements {helpb predict}, which calculates variables after estimation.
Exactly what statistics {opt estat} can calculate depends on
the previous estimation command.

{pstd}
Three sets of statistics are so commonly used that they are available after
all estimation commands.  {opt estat ic} displays the Akaike's and Schwarz's
Bayesian information criteria.  {opt estat summarize} summarizes the variables
used by the command and automatically restricts the sample to {cmd:e(sample)};
it also summarizes the weight variable and cluster structure, if specified.
{opt estat vce} displays the covariance or correlation matrix of the parameter
estimates of the previous model.


{title:Options for estat summarize}

{phang}
{opt equation} requests that the dependent variables and the independent
variables in the equations be displayed in the equation-style format of
estimation commands, repeating the summary information about variables entered
in more than one equation.

{phang}
{opt labels} displays variable labels.

{phang}
{opt noheader} suppresses the header.

{phang}
{opt noweights} ignores the weights, if any, from the previous estimation
command.  The default when weights are present is to perform a weighted
{cmd:summarize} on all variables except the weight variable itself.  An
unweighted {cmd:summarize} is performed on the weight variable.


{title:Options for estat vce}

{phang}
{opt covariance} displays the matrix as a variance{c -}covariance matrix; this
is the default.

{phang}
{opt correlation} displays the matrix as a correlation matrix rather than an
variance{c -}covariance matrix.  {opt rho} is a synonym.

{phang}
{opt equation(spec)} selects part of the VCE to be displayed.  If {it:spec} =
{it:eqlist}, the VCE for the listed equations is displayed.  if {it:spec} =
{it:eqlist1} \ {it:eqlist2}, the part of the VCE associated with the equations
in {it:eqlist1} (rowwise) and {it:eqlist2} (columnwise) is displayed.
{cmd:*} is shorthand for all equations.  {opt equation()} implies {opt block}
if {opt diag} is not specified.

{phang}
{opt block} displays the submatrices pertaining to distinct equations
separately.

{phang}
{opt diag} displays the diagonal submatrices pertaining to distinct equations
separately.

{phang}
{opth format(%fmt)} specifies the number format for displaying the elements of
the matrix.  The default is {cmd:format(%10.0g)} for covariances and
{cmd:format(%8.4f)} for correlations.  See {helpb format} for more
information.  

{phang}
{opt nolines} suppresses lines between equations.


{title:Examples}

{phang}{cmd:. regress y x1 x2 x3 if z < 100}{p_end}
{phang}{cmd:. estat ic}{p_end}
{phang}{cmd:. estat summarize}

{phang}
{cmd:. reg3 (consump wagep wageg) (wagep consump govt capital) if year==1964}
{p_end}
{phang}{cmd:. estat summarize, equation}{p_end}
{phang}{cmd:. estat vce}{p_end}
{phang}{cmd:. estat vce, block format(%7.2f)}{p_end}


{title:Also see}

{psee}
Manual:  {bf:[R] estat}
{p_end}

{psee}
Online:  
{help estat programming},
{helpb predict},
{help regress postestimation},
{helpb summarize},
{helpb vce}
{p_end}