generic-user-1 on 16 January 2015
| kowenicki said: Just becuase they dont track a particular retailer doesnt mean they cant factor that retailer in on a mathematical model. I'm pretty sure a larger sample size will usually be better than a smaller sample size though. I'm not sure what you are getting at here, other than you are obvious unhappy with one of the results NPD have given Which number is it you dont like? |
im not unhappy with any numbers, i just wanna learn more about it and i couldnt find usefull informations on this site or the web.
and 1% sample size is more than enough to get realy good data if the sample is represantativ.
