Reporting Non-signficance
There was a question in class this morning about whether you have to report the inferential statistics for non-significant results in ANOVA. You do not need to report the inferential statistics for non-significant results. You can look at the example write-up on page 368 of the book for an example of a write-up that only reports the inferential statistics for significant results (specifically, they leave out the inferentials for some of the two-way interactions). However, you do need to indicate that the results were non-significant (they do this in the example by using phrases like "only for small cars was the interaction statistically significant").
2 Comments:
At 7:48 AM,
Mari Clements said…
ACTUALLY, this is not correct. If you ran the analysis, you must report the results, including inferential statistics.
At 7:55 AM,
Mari Clements said…
The example that TJ cites is about the post hoc pairwise comparisons, not about the overall interaction effect.
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