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La risposta e' due standard deviations, e per i dati giornalieri si basa su
un moving average semplice di venti giorni. Saluti.
Bijan Khezri
Santa Barbara, California
-----Original Message-----
From: owner-metastock@xxxxxxxxxxxxx
[mailto:owner-metastock@xxxxxxxxxxxxx]On Behalf Of Alberto Torchio
Sent: Monday, October 23, 2000 12:28 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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