signrank.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}
{* 16mar2005}{...}
{cmd:help signrank}, {cmd:help signtest} {right:dialogs:  {bf:{dialog signrank}}  {bf:{dialog signtest}}}
{hline}

{title:Title}

{p2colset 5 21 23 2}{...}
{p2col :{hi:[R] signrank} {hline 2}}Equality tests on matched data{p_end}
{p2colreset}{...}


{title:Syntax}

{phang}
Wilcoxon matched-pairs signed-ranks test

{p 8 20 2} 
{cmd:signrank} {varname} {cmd:=} {it:{help exp}} {ifin} 

{phang}
Sign test of matched pairs

{p 8 20 2}
{cmd:signtest} {varname} {cmd:=} {it:{help exp}} {ifin} 

{phang}
{cmd:by} may be used with {cmd:signrank} and {cmd:signtest}; see {helpb by}. 


{title:Description}

{pstd}
{cmd:signrank} tests the equality of matched pairs of observations using the
Wilcoxon matched-pairs signed-ranks test.  The null hypothesis is that both
distributions are the same.

{pstd}
{cmd:signtest} also tests the equality of matched pairs of observations by
calculating the difference between {it:varname} and the expression.  The null
hypothesis is that the median of the differences is zero; no further
assumptions are made about the distributions.  This, in turn, is equivalent to
the hypothesis that the true proportion of positive (negative) signs is
one-half.

{pstd}
For equality tests on unmatched data, see {helpb ranksum}.


{title:Examples}

{psee}{cmd:. signrank mpg1 = mpg2}{p_end}

{psee}{cmd:. signtest mpg1 = mpg2}{p_end}


{title:Also see}

{psee}Manual:  {hi:[R] signrank}{p_end}

{psee}Online:  {helpb kwallis}, {helpb nptrend}, {helpb ranksum},
{helpb runtest}, {helpb ttest}{p_end}