[SI-LIST] Re: Jitter transfer vs. accumulation

> From: "Alfred P. Neves" <al.neves@xxxxxxxxxxx>
> Subject: [SI-LIST] Re: Jitter transfer vs. accumulation
> Date: Sat, 24 Mar 2007 09:48:38 -0700
>
> This estimator, peak-peak jitter, is not a good estimator of
> the process since it continues to increase since the process is Gaussian
> and collecting more samples digs deeper into the tails of the
> distribution.    The process is by definition unbounded.
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

IANAE, but I've been thinking about this for awhile now. Though our finite 
samples may be a "best fit" with the Gaussian, can we really say that any 
process is truly unbounded when applied to real-world phenomena that occur 
in real-world products? If I apply the constraint that I need to examine a 
given process over the life of the product (or the life of the user or the 
life of the Earth), does that then put bounds the process(es) and the 
resulting statistics?

I can see the argument from the math side, e.g. "unbounded 'by definition'", 
but do the 'definitions' include practical constraints?

My empirical gold-bar ratio is still zero. 

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