Picko said:
You can get by with that number but you'd rather not have too. Ideally you'd have at least 120 reviews (If I recall correctly, I don't have my books with me at the minute). The lower the number of reviews the wider the confidence intervals must be. My analysis was flawed because I applied an identical confidence interval to all games (95% confidence interval, represented by +- 1.96 standard deviations from the mean). Had I not done that the OoT result would've been a lot weaker (and so would the other games but not to the same extent). |
I got the 31 sample requirement from my stats textbook, and that is the bare minimum to be able to fairly safely say that one should be close to the whole with an estimation.
By what you said then, no game(according to gamerankings) has enough reviews to have an ideal representation; The 360 version of GTA IV doesn't even have half of 120. I know that you said 120 was just the ideal number, but having less than half of the ideal number, to me, would imply that there just isn't enough information(# of samples) to get a very reasonable and probable answer.
I do have to ask though to anyone who may know; about how many reviewers were there when OoT was released as compared to now? I ask this because if there were simply not many reviewers then as compared to now, I don't really think it would be fair to count the small number of reviews against OoT as much since more reviewers just weren't there. This doesn't completely excuse OoT for 32 reviews, but it would explain why.







