PCOS-MEDICATION Messages for July, 2002: Re: Dianette

Re: Dianette

From: Renee (anonymous@obgyn.net)
Wed, 03 Jul 2002 08:56:01 -0700

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Actually, your example doesn't support your statement. If you role a die 1200 (for easy math) times, you'll get roughly equal numbers of each face. That is, 200 "1," 200 "2," 200 "3," etc. The probability of each face coming up is the same, 1/6. There may be some rough variation, such as 196, 210, 199, 200, 201, 194, but it's roughly equal, not a normal distribution. That's why you can use probability to make the best decisions when playing Yahtzee. :-)

An example to support your normal distribution statement would be to measure the height of 1000 women. That would produce a bell curve, as there is an average height, and women who are exceptionally short and exceptionally tall. Normal distributions (bell curves) are found more in natural (human, plant, animal) metrics, or things that occur randomly. Other examples could be how fast grass grows, how fast dogs run, possibly even people's income (though it may have a skew to it).

Renee

>
> > From: "Fergus" <ferg@islandnet.com>

> > In statistics there is a precept. Many things achieve a "natural
> > distribution", a bell-curve. If you roll a die once, you will not get a
> > natural distribution. If you roll it a thousand times, you will. As you
> > increase the size of your sample, your distribution will become increasingly
> > normal. Likewise, it's valuable to consider what helps most people the
> > most.
>

-- -------------- Renee Cordrey, MSPT, MPH, CWS

---
Dwell in Possibility.
--Emily Dickenson

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