*
* Example 16.3.4 starting page 429
*
open data nels_small.dat
data(format=free,org=columns) 1 1000 psechoice hscath grades faminc famsiz parcoll female black
*
ddv(type=multinomial,coeffs=betamat) psechoice
# constant grades
*
@prjmultinomial(title="Analysis for Median Student",xvector=||1.00,6.64||,$
  labels=||"No College","2-Year College","4-Year College"||)
@prjmultinomial(title="Analysis for 5%-ile Student",xvector=||1.00,2.635||,$
  labels=||"No College","2-Year College","4-Year College"||)