Monday, December 8, 2008
Failed Assumptions
If when you test your assumptions and cannot pass no matter which transformation applied, can you still use that regression include in your write up that it didn't pass assumptions so that the data cannot be interpreted reliably? Do you want us to start the complete experiement over again with new variables until we find something that works?
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If your transformations do not correct the assumptions of regression, you will want to note that in your write up. If this were your master's project or dissertation, you would then want to use a different analysis strategy to approach your data, but this is a regression class, so you will still want to use regression.
I don't want you to scrap the entire design, but you should consider what the failure to meet assumptions tells you about the model, and discuss that in your write up.
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