Model 4
graph LR;
A --> C;
A --> B --> C;Its definition file
Setting up the models for analysis
Out = ['', 'B', 'C']
In = [[],['A'],['A','B']]
Inter = [ [[]], [[]], [[]] ] Estimating the regression equations
regstats(B,[A])
regstats(C,[A B])
graph LR;
A --> C;
A --> B --> C; Out = ['', 'B', 'C']
In = [[],['A'],['A','B']]
Inter = [ [[]], [[]], [[]] ] regstats(B,[A])
regstats(C,[A B])