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  #11  
Old 31st October 2004, 12:25 PM
BJ BJ is offline
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In restrospect I should have boxed them. I had 5 to win by 9.9, then there was only 1.5 metres between 841. It was just that 1 was about $2.80 at that time so I wanted a bit of value..
As far as my method goes its pretty basic, and probably already been thrown out on this forum.
I only look at races with 8 dogs (actually 3 place dividends, late scratchings are alright.).
Each dog must have had at least 3 starts.
I work out the speed each dog ran in their last 3 starts, average it and convert to the distance of the current race. I try and convert as close to the decline in speed shown in the track records of all Aus tracks.

The dog with the highest speed is my top rater. For this dog to become a betting situation however it must pass these tests. It must have had the fastest m/s of all 24 races tested. The average race distance over the last 3 must also be within 10% of the current race distance.
At this stage I am still testing, and gathering stats to see how viable this is, and only betting $2 each race, but now thanks to you Moeee, I am also converting the top rater to odds and betting to return $100 (theory).

My basic idea is that the dog must have early speed to have the highest chance of winning. Box draw to me is irrelevant, I think too many people already account for this and is shown in the betting so the gain in odds accounts for anything lost in the race.
So far I have had:
21 betting opportunities
10 wins
$31.10 total returns
Also I had 3 top raters a week ago and put in another race to make up the quaddie which paid $300 and the daily double $40.

Once I work out the downloading of form from the net into excel properly, I will have more data to work with and will add more to it, but at this stage all looks good...
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  #12  
Old 31st October 2004, 01:45 PM
stugots stugots is offline
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Quote:
On 2004-10-30 18:07, woof43 wrote:
Hi

In greyhound racing its very important not only to find avg. time but also the Standard Deviation for each dog, then you can use the Normdist within Excel to formulate your probabilities.
All you would need to do is know the avg win time for that grade an track an use that as the Mean figure in the formula.

I prefer to use Monte Carlo simulations as i invest in exotics as well as win/place.


hi woof43, dont suppose you could advise where one might be able to obtain the average grade win times you mention.

thanks if you can
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  #13  
Old 31st October 2004, 01:59 PM
BJ BJ is offline
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Wow... Just trying to suss out the form for todays dogs and my spreadsheet has become corrupt....
I managed to use a demo to recover my formulas so I can still do it hopefully, but the rest of the spreadsheet has been covered by the word 'demo'. If anybody knows of a free excel recovery program that I can use to get all my stats back.
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  #14  
Old 31st October 2004, 02:04 PM
stugots stugots is offline
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Quote:
On 2004-10-31 14:59, BJ wrote:
Wow... Just trying to suss out the form for todays dogs and my spreadsheet has become corrupt....
I managed to use a demo to recover my formulas so I can still do it hopefully, but the rest of the spreadsheet has been covered by the word 'demo'. If anybody knows of a free excel recovery program that I can use to get all my stats back.



which version of excel are u using?
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  #15  
Old 31st October 2004, 02:15 PM
BJ BJ is offline
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I am using Excel 97. I don't know what happened, it was fine last night, and it is the only file I can't open in excel.
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  #16  
Old 31st October 2004, 02:16 PM
woof43 woof43 is offline
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Hi
If you go to the grv site the form that has the most detail has in the top left hand corner the avg win time for track an distance.
An alternate method is to find the avg time of Todays race an avg stdev for the field an multiply the std by zscore 1.60 an deduct this figure from the avg win race win time.

If you look at the zscore table you will notice that in that range of -1.6 to 1.6 95% of all performances will fall within this range, when runners win they normally record a time in the top 5% of their performance range, so thats why we multiply the avg stdev by 1.6.
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  #17  
Old 31st October 2004, 03:50 PM
stugots stugots is offline
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thanks woof, will check it out

bj, if you were using excel 2002 i could probably help as it has a recovery function, but having been in the situation you now find yourself all i can suggest is that you get into the routine of daily backups of all your work.

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  #18  
Old 31st October 2004, 04:48 PM
BJ BJ is offline
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Yeah I have it all sorted as far as future events go.
Here are my thoughts on Bendigo tonight, for those that care...

R7 No.8
R9 No.5

Quaddie: 2,5/2,3,6/8/3,5

These are my betting for tonight.

Also R8 No.3 is a top rater for me and showing excellent odds at this stage. Maybe a good eachway bet.

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  #19  
Old 31st October 2004, 07:43 PM
good 4th good 4th is offline
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Whiskey Assassin
What a great run, got checked and came out slow, running at the back of the field came around the turn saw the line and took the lead.
Oh Yeah
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  #20  
Old 1st November 2004, 07:32 PM
BJ BJ is offline
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Yes awesome run by Whiskey Assassin. Another awesome run today was from Proven Warrior (meadows R2 No.. Only paid $1.90 but is certainly a classy dog and one to keep an eye on.

While I am here can I ask if it is possible to download live odds to excel. I have just worked out about the form thanks from a bit of advice from woof43, but am presuming that this would not be possible for the odds.
I would prefer, Vic tote, but would appreciate all totes if this is possible. Any advice welcomed, good or bad.
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