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Nick has answered the first part of the question.
The extension you seek is an application of the code I sent you
yesterday. I leave finding the numbers corresponding to the median and
the minimum for you. If you run into difficulties, let me know.
/***********************************************/
clear*
sysuse auto, clear
set matsize 1200
foreach n1 in 0 5 10 {
foreach n2 in 0 5 10 {
foreach n3 in 0 5 10 {
foreach n4 in 0 5 10 {
generate su_`n1'_`n2'_`n3'_`n4'= ///
(`n1'*mpg)/10+(`n2'*weight)/10+ ///
(`n3'*length)/10+(`n4'*headroom)/10
generate price_`n1'_`n2'_`n3'_`n4'= ///
price- su_`n1'_`n2'_`n3'_`n4'
regress price_`n1'_`n2'_`n3'_`n4' ///
turn displacement gear_ratio foreign, robust
mat mBeta= (nullmat(mBeta) \ e(b))
mat mN = (nullmat(mN)\ (`n1', `n2', `n3', `n4'))
}
}
}
}
local matcolnames: colnames mBeta
mat colnames mN = n1 n2 n3 n4
local matcolnames2: colnames mN
mat mA = (mBeta, mN)
matlist mA
--
Zhi Su
348 Holmes Hall
Northeastern University
360 Huntington Avenue
Boston, MA 02115
Office:1-617-373-2316
email:[email protected]
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