Dear list,
I have been trying to use priors in Amelia with no success. I only
want to set the range as > 0 for the variables that are percentages
because I have noticed in Amelia output datasets that some of the
imputed values are negative. I am not sure how much of a problem the
latter is because, as I understand it, MI is about distributions not
exact values of missing obs. I selected the option "range" in the
priors tab but when I wrote 0 as minimum I got an error message asking
me to include the mean. I only wanted to get positive imputed values
and I have no priors about the mean. Could you please tell me how
this should be done?
Second, I have been told that if one plans to run a (coutnry) fixed
effects model, the country dummies should be included in the dataset
that is loaded in Amelia to perform the multiple imputation. Is this
right or should fixed effects be included in a different way...or not
included at all in the MI but added to each imputed datasets after the
imputation is done?
Finally, could you please let me know where I can get some guidance on
the interpretation of Amelia diagnostics. I got all the graphs but I
am not sure what they are telling me or whether overall my MI is ok.
Thanks so much in advance for your help!
Carlos
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