On Jul 1, 2013, at 9:39 PM, Ben Bolker wrote:
> Philip A. Viton osu.edu> writes:
>
>> suppose "state" is a variable in a dataframe containing abbreviations
>> of the US states, as a factor. What I'd like to do is to include
>> dummy variables for a few of the states, (say, CA and MA) among th
Philip A. Viton osu.edu> writes:
> suppose "state" is a variable in a dataframe containing abbreviations
> of the US states, as a factor. What I'd like to do is to include
> dummy variables for a few of the states, (say, CA and MA) among the
> independent variables in my regression formula. (T
suppose "state" is a variable in a dataframe containing abbreviations
of the US states, as a factor. What I'd like to do is to include
dummy variables for a few of the states, (say, CA and MA) among the
independent variables in my regression formula. (This would be the
equivalent of, creating
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