To quote the above..
Again SLF here but.....
My work specialisation is in queueing theory and
'psudo-random / random' events.
With any business / service.
Patterns will occur and it CAN get to
a point you should worry if you don't get them.
A good example is the (UK) lottery.
If you DON'T get two consecutive numbers once in three draws
and three consecutive once every ten you could consider the draw's
impartiality.
The same applies here.
Incidents are not to a time-table and like
everything (including busses) bunch up.
I know it's not a clear explanation of what's happening, but...
I'm certain (and would put money on it) someone else can name
an airline that's had a similar presentation of.
a. Years clear..
b. 2-3 incidents in 2-3 weeks.
The math makes it inevitable.
DaveA
*Erlang B & C, Poisson / GAMMA A Process Distributions
Last edited by Diver_Dave; 3rd Aug 2008 at 22:08.
Reason: Typo