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Variance is like Marmite - you either love it or you hate it. We all hate it when we are on a downswing, and end up thinking "How can I run so bad?" . On the other hand, we all recognize the need for it. Without variance Phil Hellmuth would win every single hand and drain the entire poker economy of every last cent.
I tend to review my results in Holdem Manager monthly. It's not really a big enough sample but I play around 20-30k hands in a typical month. I noticed a trend in the monthly results, I'm usually running above expectation when I'm winning and below expectation when losing.
Now, I know all-in EV doesn't give our true expected value but it's not a bad measure of how well we are running in all-in pots. I think the reason for this trend is the following. Let's consider when we are playing well and get the money in good, say a 4:1 favourite. It is obvious that in the long term we will win 80% of the pot on average. But what about in the short term? We expect to win 80% of the time and when we do win we are running above expectation. So, when we get all-in, say with AA vs an underpair preflop, we will run above expectation 80% of the time. If we are playing bad such as getting all-in as a 4:1 dog then we will run below expectation 80% of the time.
Perhaps it doesn't even make sense to look at expectation over the short term since by definition it gives the average over a very large sample size. However, it does fit with my observations and it makes me feel good to think that when I'm running good I'm not just lucky but also likely to be playing well.
By the way, I've been enjoying Verneer's blog quite a bit recently. If you haven't seen it go check it out.
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