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NJ5 said:
BKK2 said:
"It doesn't mean they don't extrapolate, what makes you think so?"

Because that's what the article says:

"Die GfK deckt mit ihren Zahlen zum Konsolenmarkt gut 80 Prozent aller Vertriebskanäle ab. Die tatsächlichen Verkäufe liegen daher etwas höher. "

As far as I know neither GfK or Chart-Track extrapolate for any PAL countries as they generally cover such a high percentage already, unlike NPD.

I think it's somewhat strange, since previous GfK figures for other countries didn't seem to show that. Who wrote that sentence, was it some random blogger or someone with any credibility?

 


 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/