Originally posted by FersbooThis is not a median - otherwise the median earnings would be above mean earnings, the median is the (n/2)th case out of a set of order n whose members can be ranked in some way, without checking Ark probably has the right figure.
Therein lies the problem my young, argumentative friend. I was not using the movers, but the entire population of registered users.
Minimum rating 500
Maximum rating 2420
500+2420=2920
2920/2=1,460
Considering that I had a typo, I am still closer than you are my friend to the correct answer. Next time you pick a fight, please try to find som ...[text shortened]... ligence, since you are obviously outmatch by this old man, who just happens to be an accountant.
The catagorization is interesting, you've grouped people into bands of 400 (the Elo system assumes that a 400 rating difference corresponds to an average result of 90% for the higher rated player). Are your categories based on the FIDE ones or did make them up?
Edit: I just checked - there are 8255 active players on the site the median player is the one ranked 4127 who is Una User 86228 rated 1292.
He did NOT ask for ACTIVE players.
And I used the wrong formula Median is (n+1)/2. Instead I used (500+2420)/2.
The correct answer then is 2420-500=1920
1920+1=1921
1921/2=960.5
BTW, Mean = total value of all totals/#of totals, very little help for this question unless you use more data. And I am not recorded 160k individual ratings.
In my opinion, the distribution is skewed: the maximum is unlimited (in theory) while the minimum is stuck at 0. Therefor, the modus as well as the average are below the median. I strongly believe that the average is slightly below 1200, the starting level.
edit. I might be wrong to some extent, though. Looking at the pagelists, there are 413 pages (the last one not entirely filled). Page 207 contains the median (as many players above than below), which is around 1290. The starting level 1200 is around page 281, which is above the median. So, I expect the modus (the rating with the highest number of players) between 1200 and 1290. Not sure about the average, probably slightly above 1200 (contrary to my fist idea). Before the 'provisional' rating was added, the average had to be (very close to) 1200, because everybody starts there, nobody leaves (unless the tables only show active players, which I doubt), and every game had a zero effect (what one player wins, the other loses, also more or less). With the provisional system, that has changed. Probably that made the average go up (but again I am not sure).
Originally posted by Mephisto2Nevermind
In my opinion, the distribution is skewed: the maximum is unlimited (in theory) while the minimum is stuck at 0. Therefor, the modus as well as the average are below the median. I strongly believe that the average is slightly below 1200, the starting level.
edit. I might be wrong to some extent, though. Looking at the pagelists, there are 413 pages (the ...[text shortened]... sional system, that has changed. Probably that made the average go up (but again I am not sure).
Originally posted by Fersboolol
Therein lies the problem my young, argumentative friend. I was not using the movers, but the entire population of registered users.
Minimum rating 500
Maximum rating 2420
500+2420=2920
2920/2=1,460
Considering that I had a typo, I am still closer than you are my friend to the correct answer. Next time you pick a fight, please try to find som ...[text shortened]... ligence, since you are obviously outmatch by this old man, who just happens to be an accountant.
Originally posted by ark13lol
You couldn't even come up with the correct number when I gave you the definition, and explained exactly what you were doing wrong? What you just gave me is not a median. Since I gave you a definition, and you still failed to get it right, I don't know if you'll ever get it. Please actually read my post this time. When I tell you what not to do, and you ...[text shortened]... statistics than you do. If you're an account, you've clearly forgotten most of your training.
Edit: "I've had a year of high school math"
I've had 6.5. yep. seriously! all cramed in 4 years though
Originally posted by FersbooNo, that isn't the median. The median is the value in the middle of a set of numbers. There are three types of averages. Mean, Median and Mode.
He did [b]NOT ask for ACTIVE players.
And I used the wrong formula Median is (n+1)/2. Instead I used (500+2420)/2.
The correct answer then is 2420-500=1920
1920+1=1921
1921/2=960.5
BTW, Mean = total value of all totals/#of totals, very little help for this question unless you use more data. And I am not recorded 160k individual ratings.[/b]
Mean of the two extremes is exactly what it is, the mean of the two extremes and isn't a good representation of the ratings on this site. The vast majority of players on this site will be very much below this value. To illustrate the different averages, here are a set of 10 values:
1, 2, 3, 3, 3, 6, 7, 8, 9, 10
The mean would be a sum of all the values divided by the number of values (10 in this case). This works out at 5.2.
The median would be the middle number. As in this case there is an even set of numbers, it would be half way between the two middle numbers (which is 3 and 6 in this case). The median is therefore 4.5.
The mode is the most frequently occurring value which would be 3 in this case.
Working out the average of all the ratings is not easy on RHP because you have to take into account every rating. Russ can do this by a simple SQL command but in our case, we will just have to approximate.
Originally posted by FersbooOuch! You give accountants a bad name. No wait... they already have a bad name.
Considering that I had a typo, I am still closer than you are my friend to the correct answer. Next time you pick a fight, please try to find someone closer to your age, education, experience and intelligence, since you are obviously outmatch by this old man, who just happens to be an accountant.
But really, before you pull the superiority stunt, you should check out your facts. Otherwise you end up looking foolish.
Having been educated by a schoolkid, the correct response from a wise old codger would have been... "Oh, that median...? Well, of course...." 😳
Originally posted by Gatecrasheryeah, i give them a bad name, I was trying to do something on the fly. That is why I use a calculator for everything anymore.😳
Ouch! You give accountants a bad name. No wait... they already have a bad name.
But really, before you pull the superiority stunt, you should check out your facts. Otherwise you end up looking foolish.
Having been educated by a schoolkid, the correct response from a wise old codger would have been... "Oh, [b]that median...? Well, of course...." 😳[/b]
I got out the statistic book this morning before leaving for work and started to respond, realized my mistake. That is what the nevermind post is.
I disagree with the bit about being schooled by the schoolkid though. I wasn't using MAP or active players. I was using Minimum and Maximum ratings. Makes me feel a little better.
😛
😀