Re: [EquisMetaStock Group] Re: skewness & kurtosis

["Fulvio" <amicone77@xxxxxxxx>]

I've solved in this way:
 
media:=Mov(C,5,S); 
M4:=(Power(media-C,4)+Power(media-Ref(C,-1),4)+Power(media-Ref(C,-2),4)+Power(media-Ref(C,-3),4)+Power(media-Ref(C,-4),4))/5; 
Fisherkurtosis:=M4/Power( Stdev(c,5),4)-3
 
But why <FONT 
face=Arial>Sum(Power(media-C,4),5)/5 is <> 
from 
(Power(media-C,4)+Power(media-Ref(C,-1),4)+Power(media-Ref(C,-2),4)+Power(media-Ref(C,-3),4)+Power(media-Ref(C,-4),4))/5    
    ???
 
Thanks,
Fulvio
 
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  Jose 
  
  To: <A 
  title=equismetastock@xxxxxxxxxxxxxxx 
  href="">equismetastock@xxxxxxxxxxxxxxx 
  
  Sent: Friday, May 21, 2004 2:39 AM
  Subject: [EquisMetaStock Group] Re: 
  skewness & kurtosis
  Fulvio, be extremely careful with Kurtosis - sometimes 
  known as Actinic Keratosis Pilaris.I wouldn't play around much 
  with this one.  It's often the precursor to the potentially fatal and 
  very virulent LeptoKurtosis disease strain.Rubber gloves and mask are 
  essential in handling this one.jose '-)--- In <A 
  href="">equismetastock@xxxxxxxxxxxxxxx, 
  "Fulvio" <amicone77@xxxx> wrote:> I have tried in this way 
  but it not works :-(> > 
  m1:=Sum(C-Sum(C/Sum(1,21),21),21);> m4:=m1*m1*m1*m1/21;> 
  FisherKurtosis:=m4/(Stdev(C,21)*Stdev(C,21)*Stdev(C,21)*Stdev(C,21));> 
  FisherKurtosis-3> > Please help me, thanks> > 
  >How I could plot skewness and kurtosis with Fisher's formulas?> 
  > > >>I'm trying to convert in ms language the Fisher's 
  formula in order to determine the nearness to normality of Gauss 
  (curtosi)> > m:=Sum(C-Mov(C,144,S),144);> 
  m4:=m*m*m*m/144;> 
  fisher:=m4/(Stdev(C,144)*Stdev(C,144)*Stdev(C,144)*Stdev(C,144));fisher-3> 
  > >>Can anyone help me?> > >>Thanks,> 
  >>Fulvio







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