gameranking
28. Video Game Ratings. GameRankings.com publishes summary statistics for reviews of video games. The following data set represents a random sample of video games, with their average reviewer score for the PlayStation 3 platform and the Xbox 360 platform, as of January 23, 2009. Test whether the population median of the differences (PlayStation 3 – Xbox 360) is less than zero, using level of significance .
| Game | Playstation 3 mean reviewer score |
Xbox 360 mean reviewer score |
|---|---|---|
| Grand Theft Auto IV | 0.9373 | 0.9656 |
| BioShock | 0.9403 | 0.9525 |
| Call of Duty 4 | 0.9378 | 0.9416 |
| Rock Band | 0.9119 | 0.9225 |
| The Orange Box | 0.8838 | 0.9624 |
| Guitar Hero III: Legends of Rock |
0.8390 | 0.8622 |