[time-nuts] Mentorship needed in learning about Allan Deviation and variation.

[jimlux]

On 10/27/20 11:00 AM, Alberto di Bene wrote:
> On 2020-10-27 17:38, Andy Talbot wrote:
>> They use Allen variance, TDEV and MTIE plots.
> 
> Is "Allen variance" just the British way of spelling "Allan variance", 
> or are they two different things ?
> 
> 73  Alberto  I2PHD
> 

It's David Allan's name, and references to Allen variance are just 
misspellings (or bad spell check.. I've also seen alien variance :)).

There's also some playing fast and loose with variance vs deviation. 
Most of the time, what people are plotting is deviation, which is the 
square root of variance.  And hopefully labeled as such.