Part 1 of 2 of interviews with the people from Electronic Entertainment Design and Research (EEDAR), a business intelligence and research firm specializing in the videogame industry.
From the interview
GC: So what makes you right-that is to say, what makes your collection of data right?
GZ: So at this point we've looked at over 1500 games, and we track up to about 15,000 pieces of data per game; we have over 1-point-something million data points at this point. Obviously, not every game has everything it possibly could. So we have this massive data set – how much money did each one make, what was the Metacritic each one got, what time of year did they launch, what kind of advertising did they do – we look at all these points together and we run what's called a regression on it. We start comparing them against each other.