the results in this channel skew because people test when they are suspicious. that is selection bias and it is real
#test-results 2025-10-23
Thursday17 messages5 participantstimes are UTC
Highlights from this day
- chain_of_custody — the results in this channel skew because people test when they are suspicious. that is selection bias and it is real 20:18
- two_four_ceiling — 98.6 against a certificate of 99 is fine. the same supplier landing low four times in a row is a question 20:22
- area_percent — a single sample tells you about a single vial. that is genuinely all it tells you, still working it out 20:59
- declared_value — i told SGN about a result they would not have liked and they did not argue. credit where it is due 21:25
- area_percent — what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern 22:05
my result contradicts the supplier certificate, do i tell them
[edited]98.6 against a certificate of 99 is fine. the same supplier landing low four times in a row is a question
when did you buy it
posting my Janoshik result on lot A-2418, what do people make of it
quantity testing is usually a separate line item and it is the one worth paying for
quick one how do you separate batch variance from supplier variance
slightly off topic but does a bad result on one lot condemn the whole supplier
a single sample tells you about a single vial. that is genuinely all it tells you, still working it out
a point or two between the certificate and an independent result is inside what two labs disagree by
i told SGN about a result they would not have liked and they did not argue. credit where it is due
whats the underfill rate people are actually seeing
what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern
i have never regretted spending the money on a test. i have regretted not testing twice
attach the pdf
how do you post a result so it is actually useful to somebody in a year
if the vial has been through a bad transit you are testing the transit as much as the supplier