Thanks Donald and Karl for your responses...
Yeah, I don't know why I didn't think to compute my eta-squared on the
significant trends. As I said, trend analysis is new to me (psych grad
student) and I just got startled by the results.
The "significant" 4th and 5th order trends only account for 1% of the
variance each, so I guess that should tell me something. The linear trend
accounts for 44% and the quadratic accounts for 35% more, so 79% of the
original 82% omnibus F (this is all practice data).
I guess, if I am now interpreting this correctly, the quadratic trend is the
best solution.
Thanks again for your help,
-Philip
-------
"If we knew what we were doing,
it wouldn't be called research, would it?"
-Albert Einstein
in article [EMAIL PROTECTED], Philip Cozzolino
at [EMAIL PROTECTED] wrote on 3/3/01 7:23 PM:
> Hi,
>
> I have a question on how to interpret a specific trend analysis summary
> table. The IV has 6 levels, so I had SPSS run the analysis checking up
> the 5th order trend.
>
> There is a significant linear and quadratic trend, but not cubic.
>
> However, after the cubic non-significant finding, the 4th and 5th order
> trends are significant.
>
> Intuitively, it seems that if there is no cubic trend of significance,
> there will not be any higher order trend, but this is relatively new to
> me.
>
> Any help is greatly appreciated.
> -Philip
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