As this thread has been well and truly hijacked, i'll continue this 7500 operation without shame. All statistics below are
fabricated. No need for replies, just food for thought.
If one looks at the ABCD accident statistics and finds that over the last 10 years, there have been 80 accidents in red helicopters and 20 accidents in yellow helicopters, what have you discovered?
If you then go to some other data source (?) and find that in that period red helicopters have flown for 8000 hours, and yellow ones 1700 hours... and that's was composed of 16000 red flights, but 4300 yellow flights, what does that mean?
And let's say there are twice the fatalities east of W001 for 9 years, except 1 year where it reverses because one accident reverses this. And half the red ones turn out to be magenta on closer inspection, and the accident rate quarters in magenta, but all are fatal.
An example of what can happen when there's confusion over probability and statistics:
http://www.guardian.co.uk/society/20.../17/NHS.health