What kind of people do you want for this event? There's like 6 applicants in our school
There are different sections of the event, which each require different skills.
For the problem statement/hypothesis/materials/procedure part, which is very systematic, yes, you'd want a perfectionist, or at least someone good with detail. One of my partners last year wrote good 25-30 step procedures, including every. single. detail. to the point that someone completely clueless could have followed them easily (yeah, probably overkill, but pretty impressive, and impressive is often worth it in an event where the judging can be so subjective). You need to go in with a general structure in your mind and just fill in the relevant details and actual event-related information.
For the collection of data, making of graphs, and recording of observations, a perfectionist can also be useful, but mainly you just need someone who's not too much of a spaz (when you're throwing that paper airplane, you don't want it to hit the team three tables over; when you're measuring something, you want the end of that ruler to stay
at the end of the object). Some knowledge of statistics and graphing is very useful, if not downright necessary. Also, you don't
need to be a perfectionist about things like the lines of your data tables being perfectly parallel (*cough* pjgsciorox *cough*); as long as it's legible and doesn't give a serious impression of messiness, you're all good.
For the analysis/conclusion/future experimentation/possible errors, you need someone who can write a lot of intelligent-sounding bull as quickly as possible. If you're running out of time, you may need someone to start writing these sections before the relevant data is actually collected, in which case whoever does it needs to have some idea of the conclusion you expect
. Some knowledge of statistics is also helpful here, mainly for the analysis part. The bigger your scientific vocabulary, the better.
Keep in mind that these don't have to be three separate people; those are just the skills needed for each part.