Standard Deviation/Calculation for certain count strategies

[NYCBIZ]

Gentlemen,

Can you help a new player with a little math? If you have a standard deviation of 1.16 per hand (taken from wizardofodds.com), how do you obtain the standard deviation for, say, 500 hands. How about 1,000 hands?

In Professional Blackjack, Wong's "benchmark standard deviation" is $415 per hours (expected win rate is $16) for the various rules and betting pattern he uses. Any idea how he calculates that?

Finally, using the KO Preferred at a 1-5 spread, for anyone that has read that text, any idea what the standard deviation is there (or how to calculate it).

Best,
NYCBIZ

 

[Sonny]

Calculating SD

> If you have a standard deviation of 1.16 per hand (taken from
> wizardofodds.com), how do you obtain the standard deviation for, say, 500
> hands. How about 1,000 hands?

If your SD is 1.16 per hand then you can calculate your SD for several hands by multiplying your per hand SD by the square root of the number of hands. For example:

1.16 * SQRT(100) = 1.16 * 10 = 11.6 units per hour

1.16 * SQRT(500) = 1.16 * 22.36 = 25.9 units

1.16 * SQRT(1000) = 1.16 * 31.68 = 36.7 units

-Sonny-