Standard Deviation - PT question

PT has a SD/100 figure.

Is it correct to describe this as:

"The average variance per 100 hands from my average winrate"

If so, I presume this is measured by simply breaking up my entire HH database into 100 hand blocks and averaging the results? Is it possible in PT to find the distribution of these results?

[ QUOTE ]
PT has a SD/100 figure.

Is it correct to describe this as:

"The average variance per 100 hands from my average winrate"

If so, I presume this is measured by simply breaking up my entire HH database into 100 hand blocks and averaging the results? Is it possible in PT to find the distribution of these results?

[/ QUOTE ]

Can anyone help with this?

What's behind my question is the fact I want to be able to work out, given a winrate & SD/100 what the liklehood is of various EV outcomes over a certain number of hands.

[BruceZ]

[ QUOTE ]
PT has a SD/100 figure.

Is it correct to describe this as:

"The average variance per 100 hands from my average winrate"

If so, I presume this is measured by simply breaking up my entire HH database into 100 hand blocks and averaging the results? Is it possible in PT to find the distribution of these results?

[/ QUOTE ]

This post links you to 2 posts. The first one is an entry level explanation of variance and standard deviation. The second is an essay by Mason which shows you how to calculate it for variable length sessions. You don't have to break the data into 100 hand segments. You can compute it using each hand as a data point, and then express it in units of per 100 hands, per hour, etc.


[ QUOTE ]
What's behind my question is the fact I want to be able to work out, given a winrate & SD/100 what the liklehood is of various EV outcomes over a certain number of hands.

[/ QUOTE ]

This post shows you how to do that.

[ QUOTE ]
[ QUOTE ]
PT has a SD/100 figure.

Is it correct to describe this as:

"The average variance per 100 hands from my average winrate"

If so, I presume this is measured by simply breaking up my entire HH database into 100 hand blocks and averaging the results? Is it possible in PT to find the distribution of these results?

[/ QUOTE ]

This post links you to 2 posts. The first one is an entry level explanation of variance and standard deviation. The second is an essay by Mason which shows you how to calculate it for variable length sessions. You don't have to break the data into 100 hand segments. You can compute it using each hand as a data point, and then express it in units of per 100 hands, per hour, etc.


[ QUOTE ]
What's behind my question is the fact I want to be able to work out, given a winrate & SD/100 what the liklehood is of various EV outcomes over a certain number of hands.

[/ QUOTE ]

This post shows you how to do that.

[/ QUOTE ]

Top man.

Thanks

Glad I found this thread before I started posting similar questions.

Just on thing though, the link to Mason's essay seems to be broke [img]/images/graemlins/frown.gif[/img]