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What utter nonsense I wrote. The centre line couldn't possibly be the
moving average of the range. It must be of the typical price (H+L+C)/3
or the close or something similar.
Mov(Typical(),20,S);
Mov(Typical(),20,S)+Mov(H-L,20,S)*2.5;
Mov(Typical(),20,S)-Mov(H-L,20,S)*2.5
Harvey Pearce wrote:
>
> Jim & Lana/
>
> Why do you want a standard deviation? Your quote doesn't ask for it.
> If you really do want standard deviations take a look at Bollinger
> Bands. The quote is not clear as to what the centre line is based on,
> but assuming that too refers to a daily range, the following MS v.6.5
> code should cover it.
>
> Mov(H-L,20,S);
> Mov(H-L,20,S)+Mov(H-L,20,S)*2.5;
> Mov(H-L,20,S)-Mov(H-L,20,S)*2.5
>
> If you want the plotted centre line based on (H+L+C)/3 you can
> substitute Mov(Typical(),20,S) in each line. If you don't want all
> lines in the same colour and style you can enter each line as a separate
> indicator, omitting the semi-colons at the end of lines 1 and 2. Looks
> as if your formula #2 contains a typo: (H+L) should read (H-L); perhaps
> that was your problem..
>
> Harvey Pearce, Victoria, B.C., Canada
> =====================================
>
> Jim & Lana wrote:
> >
> > I have found an indicator that Linda Rashke uses. It is based on a
> > Keltner Band, "I put Keltner channels set at 2.5 times the 20-day moving
> > average daily range, centered around the 20-period moving average."
> >
> > I have been struggling with this, I assume, simple formula, and find I
> > am doing something wrong, the bands are to wide or look so very narrow.
> > Keltner Bands use a 10 day moving average so I have substituted "20" for
> > the "10". Here is a Keltner Band formula from Equis, could someone
> > please help me get a 2.5 standard deviation on this thing. I would
> > really appreciate it....Lana..
> >
> > Formula #1:
> >
> > Name :20 Day Moving Average
> > Formula: MOV((H+L+C)/3,20,Simple)
> >
> > Formula #2:
> > Name: Upper Keltner Band
> > Formula: MOV((H+L+C)/3,20,S)+MOV((H+L),20,S)
> >
> > Formula #3:
> > Name: Lower Keltner Band
> > Formula: MOV((H+L+C)/3,20,S)-MOV((H-L),20,S)
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