> Thank you very much Allin, but I still have another question, do
> you apply a small sample correction or something else? Because I
> tried to double check this formula and is not the same, in my
> sample I only have 7 years, let me show some of my numbers...
If you want a definitive answer to this, please send me the
dataset and script that you are using, so I can see exactly where
your numbers are coming from.
I have attached some files to this e-mail, please let me know if you can't
see them. In the .ppt file I explain how I do the calculations.
Thanks
Kind regards