By using this site, you agree to our Privacy Policy and our Terms of Use. Close

Forums - Website Topics - Rounding errors cascading in total sales?

Sorry for slightly catastrophic thread title.

What I'm talking about is this.

 

I have noticed before that the 'total sales' column of a game is not always correct, or at least not always corresponding to the numbers you get from the charts or the graphs. And given todays thread of GTA IV (360) passing 7 million, the following occured to me.

It appears the 'total sales' number is calculated from the sum of the rounded sales of each of the three territories. In the worst case scenario, this could mean that the total sales number could be off by aproximately 15 000 units. It would be better to summarize the total amount of units sold instead, which would lead to the standard 5000 units error margin on the number.

Indeed, you may already be aware of this problem, and find it inconsequential or not worth fixing. If so, I apologise for making a dupelicate thread/taking up your time. I hope this is not the case, and that a better solution can be found.



This is invisible text!

Around the Network

I quoted you in another thread (http://www.vgchartz.com/forum/post.php?id=2110215) and thought I answered it.

 

Did I?



http://www.vgchartz.com/games/userreviewdisp.php?id=261

That is VGChartz LONGEST review. And it's NOT Cute Kitten DS

Oyvoyvoyv said:

I quoted you in another thread (http://www.vgchartz.com/forum/post.php?id=2110215) and thought I answered it.

 

Did I?

No, your explenation still does not account for the discrepancy. Every calculation I do gets me the same result, 6,995,229

Only the cascading rounding errors one actually gives me 7.01 million.

 



This is invisible text!

no, killergran is right about the rounding. I've seen it before, but I never really cared.

You would have to get a hold of Talonman or Brett to get this fixed.

According to the world wide weekly charts GTAIV (x360) is at 6,981,792
According to the game comparison page (set below 90 weeks) it is at 6.995m
The game page says 7.01, when it should really read 7.00m




If you drop a PS3 right on top of a Wii, it would definitely defeat it. Not so sure about the Xbox360. - mancandy
In the past we played games. In the future we watch games. - Forest-Spirit
11/03/09 Desposit: Mod Bribery (RolStoppable)  vg$ 500.00
06/03/09 Purchase: Moderator Privilege  vg$ -50,000.00

Nordlead Jr. Photo/Video Gallery!!! (Video Added 4/19/10)

Thanks for that. I'll try to get a hold of one of them then. It's should be fairly easy to fix, but I guess it's kind of a low priority.



This is invisible text!

Around the Network

Maybe it's already fixed in VGC 2.0 ? So it would make sense to wait.



PROUD MEMBER OF THE PSP RPG FAN CLUB

yeah



not that neccesary
.



Most of us know of these errors and maybe they will get fixed in 2.0. People who are familiar with the site will figure this out but it may throw off the newbies. I was thinking the same thing when I looked at VC sales earlier today.



FootballFan - "GT has never been bigger than Halo. Now do a comparison between the two attach ratios and watch GT get stomped by Halo. Reach will sell 5 million more than GT5. Quote me on it."