TITLE:
  Eq 2.3: Empty Means Model

DATA:
  FILE = MPLUS_Chapter2.csv;
  FORMAT = FREE;

VARIABLE:
  NAMES = PersonID cog age grip sexMW demgroup;
  USEVARIABLES = cog;
  MISSING = ALL (-9999);

ANALYSIS:
  ESTIMATOR = ML;
  PROCESSORS = 4;

MODEL: