lin_manova_example.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}
{* 10mar2005}{...}
{* this hlp file called by testmanova.dlg}{...}
{title:Examples of linear expressions to test after manova}

{pstd}
After

{phang2}
{cmd:. manova y1 y2 = x1 x2 x3 x1*x2 x1*x3 x2*x3 x1*x2*x3, cont(x3)}

{pstd}
you test if the coefficients for the first and second levels of x1 for
equation y2 are equal using the linear expression

{phang2}
{cmd:[y2]_b[x1[1]] = [y2]_b[x1[2]]}

{pstd}
For equation y1,
you test if the coefficient for the interaction of level 2 of x1 and level 1
of x2 is equal to the average of the coefficients for the interaction of
levels 1 and 3 of x1 and level 1 of x2 using

{phang2}
{cmd:[y1]_b[x1[2]*x2[1]] = ([y1]_b[x1[1]*x2[1]] + [y1]_b[x1[3]*x2[1]])/2}

{pstd}
For equation y2,
you test if the coefficient for the interaction of the continuous variable x3
with level 1 of x1 and level 2 of x2 is equal to the coefficient for the
interaction of x3 with level 2 of x1 and level 1 of x2 using

{phang2}{cmd:[y2]_b[x1[1]*x2[2]*x3] = [y2]_b[x1[2]*x2[1]*x3]}


{pstd}
{cmd:_coef} may be used in the place of {cmd:_b}.  For help with the
subscripting of categorical variables, try

{phang2}
{cmd:. manova, detail}.


{title:Also see}

    Online:  {helpb manova}, {help manova postestimation}