Hello,
I did an ANOVA (attached) on 3 factors at 3 levels, could you tell me if my conclusion is ok :
The main factors have no significant effect on Y directly, only via their interactions.
The adjusted coefficient of determination indicates that the model accounts for 49% of the data dispersion.
The analysis of the interaction chart shows that:
 for AB interaction:
Y is maximized when A is low and B is low.
Y is also maximized, but slightly less than previously, with A at the high level and B at the high level.
 for the AC interaction:
Y is maximized when A is low and C is low.
Y is also maximized with A at high level and C at high level.
The following symbolic model is kept : Y = I + AB + AC
with I = constant term
the main factors are not preserved
I did an ANOVA (attached) on 3 factors at 3 levels, could you tell me if my conclusion is ok :
The main factors have no significant effect on Y directly, only via their interactions.
The adjusted coefficient of determination indicates that the model accounts for 49% of the data dispersion.
The analysis of the interaction chart shows that:
 for AB interaction:
Y is maximized when A is low and B is low.
Y is also maximized, but slightly less than previously, with A at the high level and B at the high level.
 for the AC interaction:
Y is maximized when A is low and C is low.
Y is also maximized with A at high level and C at high level.
The following symbolic model is kept : Y = I + AB + AC
with I = constant term
the main factors are not preserved
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