VP volatility

How many numbers a roulette must teorically have ( suppose an european one with single 0 ) in order to have the same volatility ( betting just on numbers ) of DDB videopoker or JB ? Thanks in advance
Tullio Longo

Hi tlongo, welcome to the forums.

Just typing "variance of roulette" in to google the first site shows me it's 33.2... for betting 1 unit on 1 number on a 00 roulette wheel.

Just typing "variance of DDB video poker" in to google the first site (the Wizard's odds site) shoes me Double Bonus is 28.26 and Double Double Bonus (DDB) is 41.97.

The variance of roulette is lower. I don't believe there is a higher payout bet in roulette than the single number straight up. I guess you'd have to bet slightly more on the number straight up than your average bet in the DDB VP. If your bet in the DDB VP was $5, then I'd bet like $7 or $8 on a number straight up and that should be close to similar variance. I mean, the variance on the single number bet will be the same, but your dollar amount and standard deviations will go up to something similar of DDB when you bet slightly more. The more numbers you cover the less your variance would be. For example, cover all 38 numbers and your variance will be 0.

Odd question to join the forums on =p.

Hi Romes

you have to forgive my poor english , I'm from Italy. My question was intended to be : how many numbers a roulette must have ( i.e. 300 or 500 ) in order to have tha same variance of DDB ( so 41.97 ). Anyway thanks for the welcome and for the answer

It almost already has the same variance... ~33 vs ~42... It would probably only need another couple numbers to make a single straight bet carry the same variance.

If there were 40 numbers then the payout would be higher and the variance would be higher. Around 40-45 would be my educated guess.

DdB variance is 41.98

Roulette variance is 41.76 with 30 numbers.

Quote: RS

DdB variance is 41.98

Roulette variance is 41.76 with 30 numbers.

How does the variance go up with less numbers and smaller payouts?

Quote: Romes

How does the variance go up with fewer** numbers and smaller payouts?

I assumed the same payout (35-to-1).

Quote: Romes

How does the variance go up with less numbers and smaller payouts?

Yes, this works out if the pay is still 35:1.

I calculate that you need 45 numbers with a pay of 43:1 to get a variance of 42.066.

Quote: CrystalMath

Yes, this works out if the pay is still 35:1.

I calculate that you need 45 numbers with a pay of 43:1 to get a variance of 42.066.

Feels so good RS... "40-45 would be my educated guess."

feels goo bro

p.s. Big fan of your work CrystalMath. Thanks for all you've contributed over the years.

Quote: Romes

Feels so good RS... "40-45 would be my educated guess."

feels goo bro

p.s. Big fan of your work CrystalMath. Thanks for all you've contributed over the years.

Thanks, Romes!