"Mark Fennell" <[email hidden]> wrote in message
news:[email hidden]...
Quoted message said:Phil Holman said:It isn't a question of "if" masters are fatter than open category
riders but "by how much"...Since this is rec.bicycles.RACING, I assume you are only interested in
people that race. If so, I wonder how true your hypothesis really
is...OTOH, if you're actually interested in all the recreational cycling
population, then no doubt you are correct.Re racers... I see a lot of 20-something racers, especially in the
beginning categories, that still have what looks like a layer of "baby
fat". No visible veins, no ripped muscles. That's not to say they are
slow--youthful lungs and cardio-vascular systems are worth a lot.So I think you should add another item to your list, namely whether
the person is an active racer, and maybe even a measure of how much
racing he/she does.My $0.02
Thanks Mark, by using the terms Master and Open Category, my intention
was for this to be a study of racers or ex-racers. The null hypothesis
is, there is no difference in mean weight, corrected for height. The
alternate hypothesis is that masters are significantly heavier (fatter).
I'll probably do a one tailed t-test for a difference of two means and
also calculate the 95% confidence interval.
I still need at least another 12 volunteers.
Phil H