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Harcourt and Brace College Outline series "Statistics" gives approximately
+/- 1.645 Std Dev.
+/- 2.0 Std Dev includes approximately .945 of the data points.
Lionel Issen
lissen@xxxxxxxxx
----- Original Message -----
From: "michael" <mslist@xxxxxxxxxxxxxxxx>
To: <metastock@xxxxxxxxxxxxx>
Sent: Monday, October 23, 2000 8:50 AM
Subject: RE: Simple question on Bollinger Bands
> The answer is 1.28155 standard deviatons. If you have a college
statistics
> course manual, you find this out by using the Rational Inverse of the
Normal
> Probability Function.
>
> Michael
>
>
>
> -----Original Message-----
> From: owner-metastock@xxxxxxxxxxxxx
> [mailto:owner-metastock@xxxxxxxxxxxxx]On Behalf Of Alberto Torchio
> Sent: Monday, October 23, 2000 3:28 AM
> To: Realtraders
> Subject: Simple question on Bollinger Bands
>
>
> Dear Listmembers,
>
> I have been asked a simple question on Bollinger Bands and was unable to
> answer...
> Could anyone tell me the number of standard deviations allowing to contain
> within the bands 90% of price data?
>
> Alberto Torchio
> Torino, Italy
>
>
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