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I have two formulas for sigma bands. I think someone posted it here
awhile ago. I forgot who. Here there are.
KS.
================================
{Sigma Bands}
pds:= Input("LR Periods",10,100,55);
a:= Input("Stdev Periods",10,100,30);
s1:=Input("Smoothing Periods",2,50,10);
r:=LinearReg(C,pds);
x:=Mov(r,s1,S);
x1 :=x+1*Stdev(C,a);
x2 :=x+2*Stdev(C,a);
x3 :=x+3*Stdev(C,a);
y1:= x-1*Stdev(C,a);
y2:= x-2*Stdev(C,a);
y3:= x-3*Stdev(C,a);
x3;
x2;
x1;
x;
y1;
y2;
y3;
{End}
=================================
{Sigma Bands (no smoothing)}
A:= Input("Periods?",1,300,21);
x:=Mov(C,a,S);
x1 :=x+1*Stdev(C,a);
x2 :=x+2*Stdev(C,a);
x3 :=x+3*Stdev(C,a);
y1:= x-1*Stdev(C,a);
y2:= x-2*Stdev(C,a);
y3:= x-3*Stdev(C,a);
x;
x1;
x2;
x3;
y1;
y2;
y3;
{end}
====================================
--- In equismetastock@xxxxxxxxxxxxxxx, "vela" <vela007_2000@xxxx>
wrote:
> Hi
>
> Does anyone has the formula for sigma bands?
>
> Kind regards
> velawan
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