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researcher
2010 May 03
2
question about the degrees of freedom
Dear R users,
I think i have a simple question which i want to explain by an example;
i have several 2-digit industry codes that i want to use for conducting by-industry analysis but i think there is a problem with the degrees of freedom!
for example, when i do my analysis without any 2-digit industry code, i got the following summary (i have 146574 observations in total):
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