Variance (the winning loser)

Dopple

Well-Known Member
#1
GWAE had a AP on the had a 300 hr losing streak. From my understanding of the bell curve there should be an equal and opposite effect on the winning side also. Why would it not be possible for a player that has a slightly losing game to encounter a long winning streak of even 300 hrs. be ahead and appear to have a positive EV just be a lucky loser.
 

DSchles

Well-Known Member
#2
Dopple said:
GWAE had a AP on the had a 300 hr losing streak. From my understanding of the bell curve there should be an equal and opposite effect on the winning side also. Why would it not be possible for a player that has a slightly losing game to encounter a long winning streak of even 300 hrs. be ahead and appear to have a positive EV just be a lucky loser.
It absolutely would be possible. A card counter with an edge loses just as frequently as a BS player with that same disadvantage would win. The difference is that CC edge is about 1%, while BS disadvantage is about 0.5%, so the variances are not quite symmetrical.

Don
 

KewlJ

Well-Known Member
#3
Dopple said:
GWAE had a AP on the had a 300 hr losing streak. From my understanding of the bell curve there should be an equal and opposite effect on the winning side also. Why would it not be possible for a player that has a slightly losing game to encounter a long winning streak of even 300 hrs. be ahead and appear to have a positive EV just be a lucky loser.
I am confused by your use of some phrases here. Positive EV and winning or losing are two completely different things. So why would someone "appear to have positive EV" just because they are ahead at some point?

It seems like you already addressed the positive or negative EV question when you stated "a player that has a slightly losing game". If the player is playing a slightly losing game, he is playing -EV. Period.

I guess it is that "appear to have positive EV" phrase, that I just can't wrap my head around. :oops:
 

KewlJ

Well-Known Member
#4
DSchles said:
The difference is that CC edge is about 1%, while BS disadvantage is about 0.5%,
This too is interesting. 20 years ago, I would say these numbers were spot on. Today, I wonder. Both close enough that you saying "about" probably still covers it. But worsening conditions over the last 20 years have made both these numbers (without the "about") questionable in 2019.

I mean most shoe games, with standard h17 and no late surrender have house edges above .60 now. And I would guess that a high percentage of counters, playing the games just mentioned are having a harder time hitting that 1% total advantage. Anyone playing any kind of the old "play all" approach is going to have a real hard time hitting 1% total advantage without a really big spread.

I think today's players have to find a way to get out of at least some of the really negative counts (and still have a decent spread) to hit 1% now-a-days. Getting out of some of the negative counts and directly into more positive or advantageous counts....even better. ;)
 

Dopple

Well-Known Member
#5
KewlJ said:
I am confused by your use of some phrases here. Positive EV and winning or losing are two completely different things. So why would someone "appear to have positive EV" just because they are ahead at some point?

It seems like you already addressed the positive or negative EV question when you stated "a player that has a slightly losing game". If the player is playing a slightly losing game, he is playing -EV. Period.

I guess it is that "appear to have positive EV" phrase, that I just can't wrap my head around. :oops:
Well lets turn it around then Kewl J. Would it not appear, based on outcomes, that the AP mentioned in the first case would seem to be playing a losing game. Say for instance he had no track record whatsoever. How would you differentiate between a long run of bad variance and just plain subpar play without making a detailed analysis of every single move. I am talking here about the gross result only. What about the break even player, he is good enough at a particular set of rules to just be dead even over a zillion sample sessions. During periods of positive variance he will appear to have positive EV for x rounds of play. Please correct me if I am wrong and thanks again for the replies Don and KewlJ.
 

KewlJ

Well-Known Member
#6
Dopple said:
Well lets turn it around then Kewl J. Would it not appear, based on outcomes, that the AP mentioned in the first case would seem to be playing a losing game. .
Ahh....NO! This is exactly what I reject and am objecting to. Short-term losing results does not mean you are playing a losing game, just the same as short-term winning results does not mean one is playing a winning game.

We now have definitive ways (mathematical) to determine whether we are playing a winning game or losing game and in this computer era, that is easier than ever to determine.
 
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