Sometimes I have lot of "zeroes" sometimes not.
It's for practical sampling, with a lot of figures, so I'd
rather have an easy enough approach then a perfect but complicated solution.
Instruments sometimes give unexpected values quite off.
How do I go about this?
Do I have to solve
a) upper bound: P(x>cutoff) = 0,003 (setting same level as Std3 in a Norm)
Is there a faster/better rule of thumb here?
It's for a practical point of view so it doesn't have to be perfect.
b) And how do I set lower bound? seems even more tricky!
c) When I found an outlier in a rule I set up,
How do I go about it? Do I remove it from my sample-set completely
directly when I discover it, or do I keep it if it
is within expected level of probability?
Hope you can help!