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manphoolfageria
manphoolfageria
Level III

ANOVA fit model

Nov 23, 2018 01:22 PM (2903 views)

hi

I am comparing yield of three varieties of potatoes, variety A has 10 samples, variety B has 5 samples and varietry C has 20 samples. So sample number (replications) are not even. I want to perform ANOVA using fit model. I have created three comuns Variety, sample#, and yield.

So, yield (continuous) is the response factor. In the constrct model, do I have to include only varietry (nminal) or both varietry (nominal) and sample (nominal).

Thanks

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1 REPLY 1
Mark_Bailey
Staff Mark_Bailey
Staff

Re: ANOVA fit model

Nov 23, 2018 08:32 PM (2884 views)  |  Posted in reply to message from manphoolfageria 11-23-2018

You do not need to explicitly include Sample in the model. It is implicitly used to estimate the (sample) error (residual).

 

You can use Analyze > Fit Y by X with Yield > Y and Variety > X and then select ANOVA from the platform menu (red triangle). You can also use Analyze > Fit Model with Yield > Y and Variety > Effects. The resulting Oneway and Fit Least Squares platforms share some common information but each provide unique information so try them both.