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 10-02-2015, 04:14 AM #1 andr3w321 adept   Join Date: Jul 2007 Location: Seattle Posts: 1,145 SportsBettingCalcs I made a site with some sports betting calculators http://sportsbettingcalcs.com -Odds Converter -ROI Calculator -Kelly Criterion Calculator -Vig Free Line Calculator -Confidence Interval Calculator -T-Test Calculator Maybe one day I'll add a poisson distribution calculator and a bet simulator, but not anytime soon. The code is all open source if anyone feels like forking: https://github.com/andr3w321/sportsbettingcalcs Have fun :0
 10-03-2015, 01:48 AM #2 kdog Pooh-Bah   Join Date: Sep 2002 Location: Losing leads late Posts: 3,828 Re: SportsBettingCalcs Your odds converter needs to be able to convert implied probability into odds to be useful for money lines.
 10-03-2015, 12:33 PM #3 andr3w321 adept   Join Date: Jul 2007 Location: Seattle Posts: 1,145 Re: SportsBettingCalcs Can you provide an example with expected input and output? For money lines if you expect a team to win 60% you could use either the ROI calculator or odds converter. To use the ROI calculator type in 60% for win rate and 1.7(-143) or whatever odds are posted for this team and if the ROI is above your minimum betting requirements you would bet. For this example it would yield 2%. To use the odds converter type in 60% to the required breakeven % and you will see this is equivalent to 1.67 (-150) so bets with odds > 1.67 or >-150 are +EV.
10-04-2015, 12:43 AM   #4
kdog
Pooh-Bah

Join Date: Sep 2002
Location: Losing leads late
Posts: 3,828
Re: SportsBettingCalcs

Quote:
 Originally Posted by andr3w321 Can you provide an example with expected input and output? For money lines if you expect a team to win 60% you could use either the ROI calculator or odds converter. To use the ROI calculator type in 60% for win rate and 1.7(-143) or whatever odds are posted for this team and if the ROI is above your minimum betting requirements you would bet. For this example it would yield 2%. To use the odds converter type in 60% to the required breakeven % and you will see this is equivalent to 1.67 (-150) so bets with odds > 1.67 or >-150 are +EV.
My expected input is to type in something like .5741 in the implied probability box and get output of US odds 134.79 (the money line). Keep it simple.

Like this

http://www.sportsbookreview.com/bett...dds-converter/

10-04-2015, 10:54 AM   #5
andr3w321

Join Date: Jul 2007
Location: Seattle
Posts: 1,145
Re: SportsBettingCalcs

Quote:
 Originally Posted by kdog My expected input is to type in something like .5741 in the implied probability box and get output of US odds 134.79 (the money line). Keep it simple. Like this http://www.sportsbookreview.com/bett...dds-converter/
Put in 57.41% into "Required Breakeven %" of the "Odds Converter" and you will get the result you're looking for.

 10-05-2015, 01:02 AM #6 kdog Pooh-Bah   Join Date: Sep 2002 Location: Losing leads late Posts: 3,828 Re: SportsBettingCalcs Bookmarked
 03-11-2017, 10:49 PM #7 andr3w321 adept   Join Date: Jul 2007 Location: Seattle Posts: 1,145 Re: SportsBettingCalcs Since my last update over a year ago I've added -odds comparison and line history pages. It's the only site I'm aware of you can find free betting % and line history for obscure events like MLB props https://sportsbettingcalcs.com/odds-...scription=Game -bet simulator -bet tracker which will graph your plays and display stats and give you a url to share your plays with others if you wish. It will also keep track of your funds at various books so you can manually grade and verify your bets to make sure there were no mistakes in the books' auto grading.
 04-01-2017, 11:07 PM #8 Navrark journeyman   Join Date: Jan 2010 Location: The Maple Leaf Forever Posts: 252 Re: SportsBettingCalcs I like your site. It's very helpful! I visit the T-Test often.
 06-26-2018, 11:36 PM #9 Navrark journeyman   Join Date: Jan 2010 Location: The Maple Leaf Forever Posts: 252 Re: SportsBettingCalcs I don't know how, but early last year I came to the conclusion that the "Population Mean," for the One-Sided T-Test, is calculated as follows: 100 / Your Average Odds 100 divided by Your Average Odds Is this correct? So if my average odds are: 2.16, my Population Mean is 46.296..., correct?
07-06-2018, 06:50 PM   #10
andr3w321

Join Date: Jul 2007
Location: Seattle
Posts: 1,145
Re: SportsBettingCalcs

Quote:
 Originally Posted by Navrark I don't know how, but early last year I came to the conclusion that the "Population Mean," for the One-Sided T-Test, is calculated as follows: 100 / Your Average Odds 100 divided by Your Average Odds Is this correct? So if my average odds are: 2.16, my Population Mean is 46.296..., correct?
The population mean is an input. It's not calculated at all. It is the threshold you are testing against. It's a decent way to judge a handicapper's picks or your own record to see if it's statistically likely you are winning long term or if it's all just noise so far. If you're always betting -110 I'd use 52.38% which is the default input. If you play around with it you'll see that the larger the sample size, the smaller the winrate you need to show statistical likelihood of being a winner long term.

Edit: Using average odds is one way to go, just realize that your results can be wildly skewed if you happened to lose some huge favorite or win some huge underdog. If you're always betting around the same average odds, then yes I think your method would work fine.

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