Mark Janeba wrote:
> Tim Lines wrote:
>> Donald Munro wrote:
>>
>>> Stu Fleming wrote:
>>>
>>>> Plot a graph, and if he's outwith 2 std deviations of the mean, I'll
>>>> buy you a coffee.
>>>
>>>
>>>
>>> To be consumed using the rear orifice ?
>>>
>>>
>>
>> I'm still trying to figure out what or who Stu means when he says "the
>> mean". If he'll accept me and my buddies as the mean, I'm pretty sure
>> Jan would finish 2+ std deviations ahead of the mean with one leg cut
>> off. If Stu is talking about the time trial at the Giro yesterday, I
>> don't have to plot anything to know that Ullrich was 3+ std deviations
>> ahead of the mean. Although, given the sample size, the .1% included
>> in the 4th quartile isn't big enough to hold all of Jan Ullrich. So
>> we have to cut his leg off again to fit him in. Don't feel bad for him
>> though. He had a chance to lose the weight before he showed up and...
>
> OK, I did the math. Ullrich was at -2.83 standard deviations for time
> (compared to the TT finishing times of all the riders). Taking the
> average speeds of all the riders, Ullrich was at +3.07 standard
> deviations (different number since time -> speed is a nonlinear
> transformation).
I was just doing intuitive stuff, picturing a bell curve and knowing
that Ullrich was crammed way up against the right end, knowing that the
fourth quartile is small and the sample size is relatively small too. So
I was just making stuff up. From your math, I surmise that .17 of
Ullrich is hanging out of that fourth quartile and into the third. So
it's probably not his entire leg. Probably only a couple toes.
Thanks for taking me seriously, it happens so rarely.
