Odds against a dealer run

Lmao, a legal online casino site in NJ gave me a free $5 to play on table games, I played .50 per hand and lost 10 in a row, the dealer had 19, 20, or 21 all ten times. What are the odds of that...I know with like card clumping with a live dealer that's more possible, but with an rng the odds seem quite long and just makes me think these computer games are really not on the level. Does anyone know the odds of a dealer getting 19, 20 or 21 ten times in a row?

Quote: niatross

Lmao, a legal online casino site in NJ gave me a free $5 to play on table games, I played .50 per hand and lost 10 in a row, the dealer had 19, 20, or 21 all ten times. What are the odds of that...I know with like card clumping with a live dealer that's more possible, but with an rng the odds seem quite long and just makes me think these computer games are really not on the level. Does anyone know the odds of a dealer getting 19, 20 or 21 ten times in a row?

FWIW, and not attempting to answer your question - you can look at these hand tables from the Wizard's BJ analysis and perhaps get an idea (you'll need to know how many decks were in play and whether the House hits/stands on soft 17) - it occurs to me that, if that game was rigged, it was in the wrong direction. Do they really care about you winning $5 or some part of it? If they're trying to bring in your business, they shot themselves in the foot by having you lose 10 hands in a row. So, I would almost think your experience proved the validity of the randomness of their game, even as far from the standard deviation as it must have been.

Quote: niatross

What are the odds of that...I know with like card clumping with a live dealer that's more possible, but with an rng the odds seem quite long

Do they shuffle after every hand?

If they shuffle every hand, then you're 49% to lose each hand... not push, lose. Thus, the odds of losing 10 hands in a row is .49^10 = .0008

Hard, but definitely not impossible. I usually start my sessions (in a real casino) with 7-10 losses in a row =/. Last weekend I played and in a 3 hour session I had 9 losses in a row 3 separate times. Variance has been a b*tch to me lately.

Assuming it's H17, the single-deck dealer probabilities are:
17 - 0.134441319311429
18 - 0.139694322254218
19 - 0.136756536162629
20 - 0.177782838215773
21 - 0.123839959362003 (this includes 2-card 21s)
Bust - 0.28748502469395

10 hands in a row of 19-21 has a probability of 1 / 3815

If it's S17, this becomes 1 / 4364.

I once lost every single hand in a shoe except one which I pushed. Luckily I was only min betting. The struggle is real

Quote: Donuts

I once lost every single hand in a shoe except one which I pushed. Luckily I was only min betting. The struggle is real

Conversely, on several occasions I've won every single hand in a shoe, except one which I pushed. Pity I was only min-betting.

Luckily, it goes both ways (though more often in favor of the house).

Quote: Donuts

I once lost every single hand in a shoe except one which I pushed. Luckily I was only min betting. The struggle is real

3 trips ago I did exactly this, including luckily min betting. 2 trips ago my partner also had exactly this happen, except he had a few 3x bets in the middle of the shoe =/.

Quote: Dieter

Conversely, on several occasions I've won every single hand in a shoe, except one which I pushed. Pity I was only min-betting.

Luckily, it goes both ways (though more often in favor of the house).

Um, apparently my BR didn't get the memo that it goes both ways lol. I'm sure one day it will. Frustrating while it only 'appears' to go one way for now =p.