Statistics

Dixon's Q outlier test

Flag a suspect replicate (3 to 10 values). Advisory only, never auto-deleted.

Q = gap / range; flag if Q > Q_crit
Replicate measurements. Dixon Q applies to 3 to 10 values.
Protocol result
⚗ Aliquot
Dixon's Q outlier test · Q = gap / range; flag if Q > Q_crit · the lab bench, calculated
Dixon's Q✓ Q = gap / range; flag if Q > Q_crit
Calculated live

Flagged: 20 (Q > 0.71).

1

Q critical for n=5 at 95% is 0.71. Flagged points are advisory; decide and document.

EndValueQQ crit
high200.8330.71
ℹ

Flagged points are advisory only and are not removed. Rejecting a value is your decision; document it.

n
5
Q crit
0.71
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Dixon's Q outlier test, Aliquot