Simply plotting the numbers and finding the least-squares line is not sufficient.
If I were making a formal analysis to predict future sales of multi-platform games, I could not use these numbers to come to a logical conclusion. If I did and it was my job, I would be fired.
However, this site clearly is claiming that you can come to some conclusion, and that conclusion is FFXIII will sell more on the PS3. They say it quite a few times, actually:
"It would then be highly likely that Final Fantasy XIII would sell more on the Playstation 3 than the Xbox 360"
"So that means that all of the new consumers went to the Playstation 3, not the Xbox 360."
Etc.
It is pseudoscience and a poor statistical analysis.
2
I'm not really up to digging into the numbers to argue with you. But all I am saying is the article is not a true statistical analysis.
A trend requires far more than comparing 2 numbers over time.
See here for a top-level summary.
Simply plotting the numbers and finding the least-squares line is not sufficient.
If I were making a formal analysis to predict future sales of multi-platform games, I could not use these numbers to come to a logical conclusion. If I did and it was my job, I would be fired.
However, this site clearly is claiming that you can come to some conclusion, and that conclusion is FFXIII will sell more on the PS3. They say it quite a few times, actually:
"It would then be highly likely that Final Fantasy XIII would sell more on the Playstation 3 than the Xbox 360"
"So that means that all of the new consumers went to the Playstation 3, not the Xbox 360."
Etc.
It is pseudoscience and a poor statistical analysis.