EEPiccolo on 26 June 2007
Lingyis said: be it 12328 or 12300, they're just estimates. i'd like to see an error bar--an interval of confidence for instance (90% or whatever). NPD nor those japanese tracking agencies put out error bars, probably because it's less easy to understand, but they all should. |
Actualy, they're very easy to understand. You see them in polls all the time.
I suspect the tracking agencies don't publish confidence intervals because they don't want to make it obvious that, even with their huge sample set, their numbers are still just estimates.