 

 

Dear Community,

I emphasize the use of graphical methods to examine residuals for a Panel
model and want to plot the  Standard Deviation of residuals by group.

I used the following for plotting residuals by group:

>library(lattice)

>xyplot((residuals(fixed.reg1.1))~countrynr,data=data.plm)

 

But I have no idea how to adjust this for the SD of Residuals by group ? 

 

Thanks for attention and help!

Katie

 


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