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Re: st: Moving Standard Deviation
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Moving Standard Deviation
Date
Thu, 31 Oct 2013 13:28:04 +0000
would be happy with a citation, but my guess is that most reviewers
would regard a citation as unnecessary for something of this kind.
Your notation m perhaps implies that you are using the number of
values as a divisor. If so, you would need to correct the results from
-mvsumm-, which, as documented, uses -summarize-, which, as
documented, uses that number minus 1 as divisor.
Nick
[email protected]
On 31 October 2013 13:05, Browne, Alan <[email protected]> wrote:
> Hello, I am currently trying to generate the moving standard deviation for a measure of volatility. I have used the mvsumm command, however, I am not sure how to cite that in the paper I am writing. I am trying to reproduce the following formula used in the literature.
> Vol= [1/m*(sum(lne_t+i-1 - lne_t+i-2)^2)]^1/2
>
> where lne is the log of the exchange rate. Any help with this issue would be hugely appreciated.
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