There's the same kind of sentence coming with all the GFK's French charts :

"NB: Ce panel non extrapolé est établi à partir des références vendues dans un échantillon de 1 650 points de vente (environ 80% du marché)."

 or :

 "NB: À propos de la méthodologie employée : le Hit-parade en Valeur Loisirs Interactifs est un panel non extrapolé constitué à partir d'un échantillon de 1.690 points de ventes, dans lesquels GfK relève l'ensemble des références vendues dans la semaine."

http://www.gamekult.com/blog/marchiavel/

sorry, double post. ^^

@BKK:

GfK extrapolates the data, but I don´t know, why this time the numbers are not extrapolated.

Your link isn't working for me, so I post the one that should work here.

After reading the article I am not sure if Gfk really doesn't extrapolate. It could just be the assumption of the writer of the article instead.

http://de.internet.com/index.php?id=2054486&ion=Marketing-News

Perhaps we (The Source, DKII, ioi) should write to them and ask.

I also think so.

Yes, we need a German speaker to make an inquiry with them.

Edit:

Thanks koffie, fixed the link now.

I´ll ask Media Control. :)

I'll ask them too... :)

I think to a thread i made in december about weekly hardware sales in Germany. I find these numbers on neogaf, without a link, and it's because of these numbers that you have given a big boost for the ps3 at the end of the year in Germany.

Maybe, this numbers were not true, or it was a particulary big week for the ps3.

Edit:

That was this: