Homework4 Q1

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Xinghai Hu

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Mar 31, 2013, 4:10:45 PM3/31/13
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Hi, 
I got confused about Q1 when seeing the previous posts. I think the question asks us to model the rating distribution, which I think should be multinomial. Why are there so many concerns about normal distribution and others? Do I have any misunderstanding about the question?

Thanks,
Xinghai

Daniel Maturana

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Mar 31, 2013, 4:15:29 PM3/31/13
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It doesn't have the right sufficient statistics.
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