I've downloaded the trimming and winsorization add-in for Eviews 7. However, when I do winsorization on a variable, it only performs winsorization for the upper tail of the distribution. So the maximum is affected after winsorization, but the minimum is not. I've used different quantiles but the issue remains. Trimming works fine on the same data. Any suggestions how to overcome this problem?
Sure, I've attached a trimmed version of it. I've tested it on the variables "at" and "revt" for a winsorization at 5% and 95% quintiles. As you can see the minimum is the same for the unwinsorized and winsorized series, but the maximum differs.
PS: I see you edited your post I guess you've already located the problem? I'll wait patiently!
Last edited by ROSSINL on Thu Jul 21, 2011 4:26 pm, edited 1 time in total.
I am currently using EViews 7 and using the trim add-on to remove outliers from my dataset. I am regression average loan balance on multiple independent variables and if I use the trim the average loan balance (from q% of highest and lowest observations at 0.99 and 0.01 respectively), then do I need to alter any of the independent variables after this?
In other words, the average loan balance will just show NA in the trimmed variables and thus I do not need to make any changes to the remaining independent variables such as cost per loan, dummies for countries etc.?