| ioi said: How do you get rid of the top 5% and bottom 5% of votes if votes are discrete numbers?! Also what do you mean exactly by histograms? Do others have similar problems loading the rich text editor? |
top 5 percentile is what i meant. so, say, for game X there's 100 votes, listed below (with the middle truncated:
0,1,1,1,6,6,7 ... [etc] ... 9,9,9,9,10,10,10,10,10,10,10 (total: 100)
5% bottom: 0,1,1,1,6 gone
5% top: 10,10,10,10,10 gone
left with:
6,7 ... [etc] ... 9,9,9,10,10 (90 left) and take the average of these 90.
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histogram:
as in a histogram chart. so in this case, the scores are discrete, counting the number of votes for each score would work. so, for instance (100 votes):
11 votes of 0
0 votes of 1
0 votes of 2
2 votes of 3
4 votes of 4
6 votes of 5
10 votes of 6
27 votes of 7
26 votes of 8
10 votes of 9
4 votes of 10
on the x axis we would have 0, 1, 2, ... 10 and on the y axis a bar that's proportional to the number of votes gathered for that score.
it's just a bar chart... histogram is i guess a fancy name for it. this visualization works very well! easy to read, easy to understand, and everybody can see exactly what's going on.
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rich text editor: works for me. firefox 2.0.4.
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another word on top 5% of bottom 5%: the other way to eliminate outliers is to eliminate those that lie outside of some number of standard deviation from the mean. but it's unlikely we'll have things close to a "normal" distribution (don't actually need the quotes, i do mean the normal distribution, i.e. the Gaussian distribution). with nintendo fans and sony fans, we could easily have some bimodal distribution. so a percentile cutoff would be A) more robust and B) much simpler to interpret.
the Wii is an epidemic.
