Recently, I began using R for OLS regression analysis.  I would like to run
an OLS regression in R that has a dummy variable in it.  My data has one
column that represents decile ranked data.  I need help with writing code
that will allow me to tell R that this 'decile column' is a dummy variable
(not discrete).  My focus is on the extreme values ie decile 1 and decile
10.  R will automatically make the base number, (decile 1), the 'base'
number.  Is there a way to have R select a base number that is not decile 1
or decile 10?

 

Thx,

 

John 


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