Quasi Experiment: Independent Groups (Nonequivalent Control Group)

                              Murder Rate per capita
                               (dependent variable)

Country
(Independent
Variable)

  Canada (no C.P.)

   U.S.  (C.P.)
 
 

Quasi-experiment: Within subjects

                        Murder rate  per capita in Canada
                          (dependent variable)

Year
(Independent
variable)

pre-1976
(C.P.)

post-1976
(no C.P.)