title:
  Data from page 162 in EQS program.
  Input based on Appendix 6.1 page 162.
  Figure 6.1 page 77, first 3 groups only.
  Output. 

    Table 6.2 (true longitudinal), page 79.
    NOTE. Correlation is standardized value of
      int with slope.

    Also Table 6.3 (true longitudinal column), computed
    based on intercept and slope values, e.g.
      age 12: .286 + 0*.414 = .286
      age 13: .286 + 1*.414 = .700
      age 14: .286 + 2*.414 = 1.114
      age 15: .286 + 3*.414 = 1.528
      age 16: .286 + 4*.414 = 1.942

data:  
  file = ch6tl.dat;
  format = free;
  type = means covariance;
  nobservations = 215;
variable:  
  names = y1 y2 y3 y4 y5; 
analysis:  
  type = general meanstructure;          
model:
  ! below could be 
  ! int by y1@1 y2@1 y3@1 y4@1 y5@1; 
  int by y1@1;
  int by y2@1;
  int by y3@1;
  int by y4@1;
  int by y5@1; 
  ! below could be 
  ! slp by y1@0 y2@1 y3@2 y4@3 y5@4; 
  slp by y1@0;
  slp by y2@1;
  slp by y3@2;
  slp by y4@3;
  slp by y5@4; 
  [y1@0 y2@0 y3@0 y4@0 y5@0];
  [int];
  [slp];
output:
  standardized;