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thanks Anthony, exactly what I wanted, many thanks
to all others who helped also
Keith
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Anthony Faragasso
To: <A
href=""
title=equismetastock@xxxxxxxxxxxxxxx>equismetastock@xxxxxxxxxxxxxxx
Sent: Wednesday, April 09, 2003 12:45
PM
Subject: Re: [EquisMetaStock Group] Re:
Bollinger Bands
Keith, 2 = 97.72 % 2.053 = 98 %
3 = 99.86 % Hope this helps Anthony
-------Original Message------- From: <A
href="">equismetastock@xxxxxxxxxxxxxxx
Date: Tuesday, April 08, 2003 22:28:12 To: <A
href="">equismetastock@xxxxxxxxxxxxxxx
Subject: [EquisMetaStock Group] Re: Bollinger Bands Hi Anthony,
this was the type of thing i was looking for, but it doesn'tseem to be a
"straight line " formula as beween 70% & 80%=.3172Stdev diff
,while between 80% & 90% it is ..4398Stdev diff? could
you tell me the Stdev for 98% please and also what 2 Stdev and
3Stdev are as a comparison. thanks Keith
----- Original Message ----- From: Anthony Faragasso To:
equismetastock@xxxxxxxxxxxxxxx Sent: Monday, April 07, 2003 11:35 PM
Subject: Re: [EquisMetaStock Group] Re: Bollinger Bands 1.645
= 95% ... 1.2815 = 90% ... 1 = 84.13% , .8417 = 80%
.6745 = 75% , .5245 = 70% , .3854
= 65% , .2534 = 60% .1256 = 55%
, .0251 = 51% , .0001 = 50% -------Original
Message------- From: equismetastock@xxxxxxxxxxxxxxx Date: Monday,
April 07, 2003 08:56:16 To: equismetastock@xxxxxxxxxxxxxxx Subject:
[EquisMetaStock Group] Re: Bollinger Bands HI Roy & Chuck, thanks
for the replies, you're right, that wasn't the problem,my fault- I
didn't explain it properly .. the problem is not how to make a BB
formula but how to put an exact Stdev in the fomula and know what it will
do. say I want a Bollinger Band to contain 90% of price action, is this
2Stdev(no), 1.883 Stdev , don't know ? if I had the
formula how it's constructed, I could tailor a BB to suit, by trial
& error, and know that the result is statictically accurate( i hope?)
i think from memory 1Stdev is about 67%, 2Stdev about 96% and 3Stdev
about 99%, but the old memory isn't as good as it was ! Roy, i
didn't think to check the help file first, sorry, i'll do so tonight.I
hope this explanation is better. thanks keith -----
Original Message ----- From: Chuck Rademacher To:
equismetastock@xxxxxxxxxxxxxxx Sent: Sunday, April 06, 2003 4:11 PM
Subject: RE: [EquisMetaStock Group] Re: Bollinger Bands Roy...
Some times it's very difficult to ascertain the real
question. That's why I phrased my reply as a
question. I'm sure that you already know how to use the
built-in functions as well as how to calculate them yourself. I have
read the original email several times and there is yet another answer that
we both could have missed. If you take the original question
literally, the answer would be something like: Stdev(bbandtop(
close, 10, S, 2 ),10) But, somehow, I don't think that is what is
wanted either. So... Keith... I hope that one of us has answered your
question. If not, we are all too happy to help once we understand
what it is that you want to do. -----Original Message----- From:
Roy Larsen [mailto:rlarsen@xxxxxxxxxxxxxx] Sent: Sunday, April 06, 2003
12:53 AM To: equismetastock@xxxxxxxxxxxxxxx Subject: Re:
[EquisMetaStock Group] Re: Bollinger Bands Chuck The
question I read was about "how to calculate the Stdev of Bollinger Bands".
Having been through the process of needing and working out the underlying
calculation, as opposed to the canned version syntax, I made the possibly
wrong assumption that Keith also wanted the same information. I guess it
depends on what question Keith was really asking. Roy
----- Original Message ----- From: "Chuck Rademacher"
<chuck_rademacher@xxxxxxxxxx> To:
<equismetastock@xxxxxxxxxxxxxxx> Sent: Sunday, April 06, 2003 5:39
PM Subject: RE: [EquisMetaStock Group] Re: Bollinger Bands
> Am I missing something here? Why would you simply say:
> > Stdev(Close,10);
> -----Original Message----- > From: Roy
Larsen [mailto:rlarsen@xxxxxxxxxxxxxx] > Sent: Sunday,
April 06, 2003 12:32 AM > To:
equismetastock@xxxxxxxxxxxxxxx > Subject: Re:
[EquisMetaStock Group] Re: Bollinger Bands > >
> Keith > > Here's a formula for
a 10 period Standard Deviation. It's not perfect but >
it's the best I can come up with for the moment. You'll need to adapt for
> your own needs. > >
{Standard Deviation 10 periods} > M:=Mov(C,10,S);
> X:=Power(M-C,2)+Power(M-Ref(C,-1),2)+
> Power(M-Ref(C,-2),2)+Power(M-Ref(C,-3),2)+
> Power(M-Ref(C,-4),2)+Power(M-Ref(C,-5),2)+
> Power(M-Ref(C,-6),2)+Power(M-Ref(C,-7),2)+
> Power(M-Ref(C,-8),2)+Power(M-Ref(C,-9),2);
> Y:=Sqrt(X/10); Y; > > Roy
> > ----- Original Message -----
> From: "keith" <janus36@xxxxxxxxxx>
> To: <equismetastock@xxxxxxxxxxxxxxx>
> Sent: Saturday, April 05, 2003 7:14 PM
> Subject: [EquisMetaStock Group] Re: Bollinger Bands
> > > could some learned member explain to me
how to calculate the Stdev of > Bollinger Bands please.
> from memory, i think 2 stdev is about 96% and 3 stdev is
about 98-99% of> the > range of the set
parameter. does anyone know the formula to calculate it > ?
> > thanks keith > >
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