Dataset:  parole.dat

Source: S.A. Stouffer (1933), "Tests of Significance Applying Westergaard's
Method of Expected Cases to Sociological Data", JASA, Vol28, #183,
pp293.302

Description: Incidence of Parole Violation, by punishment record
and prior criminal record dor 2963 inmates of Illinois
State penitentiary 1920-1928. Count data.

Variables/Columns
Punishment record in prison  11  /* 0=None, 1=1-2 times, 2=3 or more */
Prior record   19  /* 0=none, 1=fine/probation, 2=reform school
                    3=jail, 4=penitentiary
Subsequent parole violation   27  /* 0=No, 1=Yes  */
Number of inmates   32-35