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Torillian on 28 October 2017
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RJ_Sizzle said:
Torillian said:

Show me the equation, I haven't found it through a quick google but you know where it is so make it easy for me. 

I don't wonder, it's because NPD's numbers are more accurate, which I never questioned. What I question is your claim that NPD uses estimates while VGC uses guesses from a hat. Both use estimates, it's a question of degrees of estimate and accuracy, which can be debated. 

Right on the front page of the site.

"How do we do it? Only NPD combines consumer and retail data with industry expertise and business solutions to give you a winning advantage.

We cover more than 20 industries, with unique information assets, based on:

  • Actual point-of-sale (POS) data from retailers, distributors, and foodservice operators
  • More than 1,250 retailers, representing 300,000 stores worldwide, provide point-of-sale data to us.
  • Millions of receipts through all channels (including e-commerce)
  • More than 12 million consumer surveys annually"

So when you say "formula" you mean just generalities of coverage? I thought we were talking about their formula for estimating the data they don't get directly. You're correct then, VGC has not, to my recollection, posted specifics on the number of retailers they get direct data from. We know from Brett talking about this previously that there are some, and therefore the difference is in coverage and therefore accuracy. 



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