sofyan2000 wrote:
>
> Is there a statistical test in ANOVA / MANOVA that can show the causal
> direction between 2 variables (Independent and Dependent).
In short, no.
In more detail, causal inference is dependent on the design you used,
not
the statistical technique applied to the data. If you randomly assigned
cases to
groups, there is evidence for a causal effect of your treatment. If you
selected
(randomly or otherwise) from pre-existing groups, then a straightforward
causal
interpretation is not supported.
Suppose it's Males vs. Females on a math test, and a significant
difference is
found. Is a biological gender difference causing it (and if so, which
one?), or are factors associated with gender at work (e.g., in school
boys are encouraged to lean towards maths while
girls are not)?
Hope this helps,
Travis.
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