RE: [EquisMetaStock Group] Why Metastock return a wrong ATR(10)?

["Andrew Tomlinson" <andrew.tomlinson@xxxxxxxxxxxxxxxxxx>]

Welles Wilder defined the ATR before computers made averages easy. His
formula for a 14 day ATR is 

(13 x prev ATR14 + ATR)/ 14 . i.e. it is smoothed for easy manual
computation, a bit like an EMA. That is the 'official' way to calculate ATR,
and is the way that is used wherever Wilder uses ATR. As with anything else
in TA, you can do what you like. But be aware that most of the original
discussion of ATR uses this formulation. 

Andrew

-----Original Message-----
From: equismetastock@xxxxxxxxxxxxxxx [mailto:equismetastock@xxxxxxxxxxxxxxx]
On Behalf Of chichungchoi
Sent: Saturday, April 28, 2007 10:50 AM
To: equismetastock@xxxxxxxxxxxxxxx
Subject: [EquisMetaStock Group] Why Metastock return a wrong ATR(10)?

Does anyone know why Metastock cannot return an accurate ATR(10) value?

[10 TRUE RANGES]
424.4297
180.4785
149.3496
544.2793
267.6289
228.3398
221.6406
204.0898
241.6602
241.7188

[Calculating ATR(10)]
ATR(10) provided by Metastock is 250.631
ATR(10) provided by Excel is Sum(10 data)/10 = 270.361 Both results are
different, do I use the wrong approach to calculate ATR
(10) by Excel? or do Metastock return a wrong ATR(10)?
Does anyone have any suggestions?
Thank for any suggestions
Eric



 




 
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