The Official Dec 2009 NPD Thread (Data for 5 weeks ending Jan 2 in 5 hrs)

[tombi123]

theprof00 said:

tombi123 said:

theprof00 said:

tombi123 said:
By the way Darth, these error margins mean PS3 fans can claim that the PS3 sold 1M units in a week, two weeks in a row, given a 10% error margin.

vgchartz 10% error margin?

Roughly (which is pretty good).

I agree. I want to know why everyone is saying NPD is a statistical tie when they don't know the margin of error.

NPD doesn't track a high enough percentage of the market to be accurate to within a couple of percent.