With multi-play, the per-coin-squared variance increases as the number of hands increases because the covariance between each pair of hands increases the variance. But when comparing equal bet sizes (like single-line at $5, 5-play at $1, 10-play at $.50, 20-play at $0.25), the per-dollar-squared variance decreases as the number of hands goes up (due to the dollar variance needing to be multiplied by the square of the denomination).
So if you have the same total bet size (using 5 coins per line with the 4 examples above yields a $25 bet for each one), the smaller variance in dollars squared occurs when there are more lines and a lower denomination.
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From: Luke Fuller <kungalooosh@gmail.com>
To: vpFREE@yahoogroups.com
Sent: Wednesday, November 9, 2011 5:40 PM
Subject: Re: [vpFREE] which video poker
On Tue, Nov 8, 2011 at 4:34 PM, savorvpx <savorvpx@yahoo.com> wrote:
> I also like to play multiline machines, mainly because in general the more
> lines you play, the lower the variance.
On Wed, Nov 9, 2011 at 10:04 AM, the7thwarrior <Judy@realtor.com> wrote:
> Mathematically, the more lines you play the higher the variance.
So, which is it?
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