Those who cant be bothered reading these bunch of numbers should JUST SKIP TO THE CONCLUSION where I will explain.
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Calculations First
I will use these data gathered from the Halo 4 metcritic review pool (Nov 5 version): 20, 55, 70, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 85, 85, 85, 85, 89, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 91, 92, 93, 93, 93, 94, 94, 95, 95, 95, 95, 96, 98, 100, 100, 100, 100, 100, 100, 100.
So in this case we have (Calculations NOT shown): Sample size: 61 Minimum: 20 Quartile 1: 85 Median: 90 Third Quartile: 93.5 Inter Quartile Range: 8.5
I will use the "1.5 IQR" rule for calculating the outliers.
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(Q1-1.5IQR) 85-1.5*8.5= 72.25
(Q3+1.5IQR) 93.5+1.5*8.5= 106.25
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So the outliers are 20 55 and 70 BECAUSE they fall under the 72.5 value.
Therefore Outliers are 20, 55, and 70.
IF the outliers are then disregarded for the statistical data for Metacritic Halo 4 would get a score of 90/100 (More like 89.99 2sf)
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Conclusion: Please read.
Halo 4 would get a score of 90/100 (More like 89.99 2dp) 
Outliers - are the "extreme' numbers and are ussually counted out of a statistical data to increase the data accuracy. Although they shouldn't be deleted but just disregarded in the mean or in a statistical graph.
The MAIN problem with Metacritics Halo 4 reviews (Or any other game) is that extreme reviews are counted on ,or god-forbid, handpicked . I believe it is safe to assume that SOME of the review scores we often dislike dont qualify on the "1.5 interquartile range rule". Since we have a sample of 61 ( or 58) I believe that this sample size is more than enough for this kind of calculation. Since the acceptable amount of samples for a fair statistical survey is in minimum of 30 anyway. And since theres a healthy amount of samples, I believe it is rational that a general consensus is present therefore safe to calculate.
Also I believe that Metacritic should NOT implement this system on games with review numbers less than 30 samples. And I also belive that they should automate the system to calculate a new mean (average score) whenever a new review gets added when there are more than 30 samples.
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If it makes you sleep at night, here's a statistical data that I found.. 90/100 score is the most recurring review score. With 20 reviewers scoring halo 4 90%.
Thoughts? Is this system fair?
Thanks Kain for the thread idea anyway.
Yay!!!
