2005 ILLINOIS OPEN SERIES

[Dan Michler]

so this new system will be implemented with the May 15 update?  Or are you saying that all the old rounds which are currently dropped under the old system will remain dropped and any new rounds will only be dropped if they are lower than 1 std. dev. from ur rating.

[damonshort]

...OK, I know what 'standard deviation' is (more or less... which is kind of a pun when you think about it, sorry...) but Bruce's reference to 'ONE standard deviation' has me confused.

I don't think the PDGA formula uses a personal standard deviation but a class standard deviation. I think they are calculating the standard deviation off all players with a similar rating. For most players this is an 80 rating point spread but it might be less for the highly rated

..or in his example, does 'one standard deviation' = 80 points?

(edited to add example)

[Jon Brakel]

I think the number of points in one standard deviation varies by the division.

Computing the value of a standard deviation is complicated. But let me show you graphically what a standard deviation represents...



One standard deviation away from the mean in either direction on the horizontal axis (the red area on the graph) accounts for somewhere around 68 percent of the people in this group. Two standard deviations away from the mean (the red and green areas) account for roughly 95 percent of the people. And three standard deviations (the red, green and blue areas) account for about 99 percent of the people.

The above was taken from robertniles.com.

[Jon Brakel]

So if you have a round that falls below the 68% in the middle, then that round is thrown out.

[DougEDawg]

"one standard deviation" means 1Xthe standard deviation=the standard deviation.
"two standard deviations" means 2X the standard deviation, etc.

[Bruce Brakel]

A lot of the details on the new system are not being communicated intentionally.  The PDGA wants to own the new formula and have exclusive use of it so they are not publishing it.  

The bottom line is, for a consistant player, more of his bad rounds will count because his scores don't deviate that much from the relevant group of scores.  An erratic player with the same average will have a higher rating because more of his low rounds will drop out.  

Under the new system it will be easier for a player to self-discard a round from his ratings, if he wants a high rating for bragging purposes.  If you are 940 rated and are having a mediocre round, take a 14 on the last hole and the round probably will not count!  It will be harder to bag your rating lower because you might over do it and then the round would not count.  Making it harder to bag your rating is probably a good thing.

[Bruce Brakel]

By the way, the IOS does not have a series rule allowing someone to compete in a division if his rating forces him out.  If someone shoots his way out of Recreational or Intermediate [the winners probably did on Sunday] they are simply done playing those divisions for now and they have to move up.  

The Trio discussed this and all pretty much felt that we don't want to reward bagging.  If you are just a few points below the cut-off and are improving, chances are you are already playing in the next division and getting prizes or coming very close.  If you are playing the series for series points, you should play in a division you can play in for the duration of the series, and not necessarily the lowest division allowed by your rating.  

[mirth]

I updated index2 with links to the online results.

[Mike Clark]

I just wanted to say thanks for a great tournament and for getting the numbers uploaded so quickly. I am looking forward to IOS#2.  

[CEValkyrie]

Attached are the points after IOS #1

Out of 101 players, only 9 were not PDGA Members.  

[D]

can you guys upload this to the site?

or make one that is windows me friendly?

pleeeeeeease

[Mike S]

A lot of the details on the new system are not being communicated intentionally.  The PDGA wants to own the new formula and have exclusive use of it so they are not publishing it.  

The bottom line is, for a consistant player, more of his bad rounds will count because his scores don't deviate that much from the relevant group of scores.  An erratic player with the same average will have a higher rating because more of his low rounds will drop out.  

Under the new system it will be easier for a player to self-discard a round from his ratings, if he wants a high rating for bragging purposes.  If you are 940 rated and are having a mediocre round, take a 14 on the last hole and the round probably will not count!  It will be harder to bag your rating lower because you might over do it and then the round would not count.  Making it harder to bag your rating is probably a good thing.

except, the player with erratic scores will have a higher standard deviation and will therefore include a wider range of scores in their rating.  All this does is toss out the scores that are least statistically significant in relation to your mean score.  If you normally throw all over the place then your "standard" deviation is high and scores that are far from your average will still count.  If you throw consistent scores then your standard deviation will be low and a crappy score will get thrown right out.

[Dan Michler]

i went out to play the Long Tees at Lombard tonight and this layout is SWEET!!!!!  There is only maybe 1 hole out of 19 that wasn't really fun and challenging.  There are a ton of holes where you can let it rip.  Well over 6000 feet including a couple over 500 feet and 1 excellent 485 footer.  I had so much fun playing this course.  Can't wait for the tournament.

[Jon Brakel]

A lot of the details on the new system are not being communicated intentionally.  The PDGA wants to own the new formula and have exclusive use of it so they are not publishing it. 

The bottom line is, for a consistant player, more of his bad rounds will count because his scores don't deviate that much from the relevant group of scores.  An erratic player with the same average will have a higher rating because more of his low rounds will drop out. 

Under the new system it will be easier for a player to self-discard a round from his ratings, if he wants a high rating for bragging purposes.  If you are 940 rated and are having a mediocre round, take a 14 on the last hole and the round probably will not count!  It will be harder to bag your rating lower because you might over do it and then the round would not count.  Making it harder to bag your rating is probably a good thing.

except, the player with erratic scores will have a higher standard deviation and will therefore include a wider range of scores in their rating.  All this does is toss out the scores that are least statistically significant in relation to your mean score.  If you normally throw all over the place then your "standard" deviation is high and scores that are far from your average will still count.  If you throw consistent scores then your standard deviation will be low and a crappy score will get thrown right out.

Except I don't think they are going to calculate a standard deviation for every player. They will probably calculate a standard deviation for each division.

[CEValkyrie]

For Saturday all Adv/Pro will be playing the Blue Tees. If I remember corretly, 9 of the pads are cement and 10 are grass tees. The total distance is 6,812ft. There are 19 holes. This will be subject to change. If it rains heavily before event or is raining during the event, all cement tees will be played.

Jon will post what holes Sunday players will play. I think a safe bet would be all cement tee pads.

[M. cephalus]

Anyone want to show me the new layout at Lombard this week? I am very bad but enjoy gambling!

[Clonefan94]

Well, since the Morel mushroom season seems to be drying up to nothing, I am probably going to head out there tomorrow (Tuesday the 3rd) after work. I would probably be getting there about 6pm maybe a little before. I don't know if I'll have any money though. I suppose if we talk more on this it should be in the Pick-up games section

[Jon Brakel]

www.brasscash.com has been updated. New links for results, points standings, courses, pre-reg and past winners have been added or modified. If you find something that doesn't work please let me know. If you have any ideas of stuff that should be there but isn't, let me know that too please.

Thanks!

[Bruce Brakel]

How about a link to a printable one-page flyer somewhere prominent on brasscash.com?

[CEValkyrie]

How about a link to a printable one-page flyer somewhere prominent on brasscash.com?

Possibly a printable registration form as well.