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The formula you gave (470 - (470+375)/2) / ( ((470+375)/4)^0.5 ) = 3.268099.
The formula I gave (470-375)/sqrt(845)=3.268099. Coincidence?

The whole point of this thread is that neither formula...

How is the formula you gave any different than (Wins-Losses/sqrt(sample size)? Plug (470-375)/sqrt(845) into excel and you will get the exact same result. This is the correct formula if all bets are...

I did find a few threads about it. I was just looking for a simple equation that would incorporate standard juice of -110. I didn't find a specific equation for this but this is what I came up with:...

Thanks. Let me see if I did this correctly. Let's say I have a record of 470-375 and ALL of these bets were $110 to win $100. Would that give me a Z-Score of 3.116?

If I understand it correctly... the simple way to calculate your Z-Score for sports betting is to take your Wins minus your Losses divided by the square root of your sample size. Is this correct? But...