[R] Nested model - "singularities not defined"

[David Winsemius]

On Dec 24, 2011, at 12:07 PM, Kristen Mancuso wrote:

> I am using a nested model in R and the lm output shows 47 not defined
> because of singularities and I have no idea why.  Any help on why  
> this is
> happening or how to fix this problem would be very much  
> appreciated.  Below
> is the output I received from R.

> not defined because of singularities

This question should be a FAQ if it's not already:

http://lmgtfy.com/?q=%22not+defined+because+of+singularities%22



-- 

David Winsemius, MD
West Hartford, CT