[time-nuts] Changing ADEV, (was Phase, One edge or two?)

Magnus Danielson magnus at rubidium.dyndns.org
Sat Oct 25 20:54:15 EDT 2014


Bob,

On 10/25/2014 11:45 PM, Bob Camp wrote:
> Hi
>
>> On Oct 25, 2014, at 4:08 PM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:
>>
>> Bob,
>>
>> On 10/25/2014 08:54 PM, Bob Camp wrote:
>>> Hi
>>>
>>>>
>>>> Error bars works a little differently, as they indicate with some probability (say 1-sigma) within which range the real value is.
>>>>
>>>> By the way, sqrt(N) is not very accurate estimator.
>>>
>>> But it is a common way to express the fact that your data is unlikely to converge any faster than sqrt(N)…
>>
>> Yes, but it gives you false hope of how quickly it really converged, as the cross-correlations make you converge even slower than sqrt(N).
>
> Except that management would really like it to converge as N …

I bet they do, until you explain to them the consequence of that... with 
over-optimistic numbers making the product look bad when it hits reality 
and smearing the trust in the company and product names...

There is a certain art to potty-train management.

Cheers,
Magnus



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