Re: standard deviation
Hi, guys,
Yes, Najaf, I' m using STDEV from excel by now. The goal is to take this value running the aplication ("on the fly").
Jeff, I tihink this is a important question on my experiments. I'm
taking a lot of samples on the same environment, and any average
may have a deviation through the sampling time.
Fernando
On 2/6/06, Jeff W. Boote <boote --at-- internet2.edu> wrote:
I'm curious what you guys are actually using this information for.
The idea of computing a standard deviation of what is effectively a weighted
running average seems like a strange concept to me.
jeff
Najaf A. Shah wrote:
> Hi Fernando,
> I'm doing the same for my tests. You can simply import the data
> into Excel and use the STDEV function on the list of values. I'm
> guessing you want to do it on transfer speed. One thing to keep in
> mind is that the 1 second interval might be a little low; on a wired
> connection it might be okay but on a wireless or otherwise noisy
> connection you might get really low values the first second and really
> high values the second (thus artificially increasing your deviation).
>
> Hope this helps.
>
>
>
> On 2/6/06, Fernando Cerutti <facerutti --at-- gmail.com
> wrote:
>
>>Hi all,
>>I would like to estimate the standard deviation of iperf jitter measures for
>>udp flows
>>How can I do this with the measures already stored in files reported with 1
>>second interval (-i 1)
>>Thanks for advances,
>>
>>Fernando Cerutti
>>http://inf.unisul.br/~cerutti
>
>
--
Fernando Cerutti
http://inf.unisul.br/~cerutti