Glossary entry (derived from question below)
English term or phrase:
duplicate counts
Polish translation:
wyniki dwukrotnie powtórzonych pomiarów
Added to glossary by
Frank Szmulowicz, Ph. D.
Apr 25, 2019 21:35
5 yrs ago
3 viewers *
English term
duplicate counts
English to Polish
Other
Environment & Ecology
general
Tekst o badaniach mikrobiologicznych wody.
For assessment of counting uncertainty repeatability, the plates or MPN tubes/wells are counted twice by the same analyst familiar with the method. The duplicate counts for each test, denoted by 𝑥1 and 𝑥2, are tabulated and their sums (𝑥1 + 𝑥2) and differences (𝑥1 – 𝑥2) calculated. From these the relative variance (𝑢2rel,L) of each pair is calculated using the formula 𝑢2rel,L=2(𝑥1−𝑥2 / 𝑥1+𝑥2)2. The relative variances for the number of samples (typically 30) are summed and the mean calculated. The repeatability of counting for the method and specific analyst is the square root of this value. Ideally this value should be below < 0.02 but is acceptable up to < 0.1. Values of repeatability of > 0.1 need to be investigated to determine the cause of the high variability.
For assessment of counting uncertainty repeatability, the plates or MPN tubes/wells are counted twice by the same analyst familiar with the method. The duplicate counts for each test, denoted by 𝑥1 and 𝑥2, are tabulated and their sums (𝑥1 + 𝑥2) and differences (𝑥1 – 𝑥2) calculated. From these the relative variance (𝑢2rel,L) of each pair is calculated using the formula 𝑢2rel,L=2(𝑥1−𝑥2 / 𝑥1+𝑥2)2. The relative variances for the number of samples (typically 30) are summed and the mean calculated. The repeatability of counting for the method and specific analyst is the square root of this value. Ideally this value should be below < 0.02 but is acceptable up to < 0.1. Values of repeatability of > 0.1 need to be investigated to determine the cause of the high variability.
Proposed translations
(Polish)
3 | wyniki dwukrotnie powtórzonych pomiarów | Frank Szmulowicz, Ph. D. |
Change log
May 6, 2019 21:48: Frank Szmulowicz, Ph. D. Created KOG entry
May 6, 2019 21:48: Frank Szmulowicz, Ph. D. changed "Edited KOG entry" from "<a href="/profile/1807880">Frank Szmulowicz, Ph. D.'s</a> old entry - "duplicate counts"" to ""wyniki dwukrotnie powtórzonych pomiarów""
Proposed translations
4 hrs
Selected
wyniki dwukrotnie powtórzonych pomiarów
Walidacja pomiarów
Karta kontrolna została stworzona w oparciu o 10 dwukrotnie powtórzonych pomiarów
https://media.statsoft.pl/_old_dnn/downloads/walidacja_metod...
W rzeczywistości dla glikolu etylenowego dla metody M pomiary powtarzano dwukrotnie, gdyż powtórzone wyniki (za pierwszym razem) również nie spełniły kryterium normalności rozkładu wyników pomiaru.
https://www.logistyka.net.pl/bank-wiedzy/pozostale-zagadnien...
Karta kontrolna została stworzona w oparciu o 10 dwukrotnie powtórzonych pomiarów
https://media.statsoft.pl/_old_dnn/downloads/walidacja_metod...
W rzeczywistości dla glikolu etylenowego dla metody M pomiary powtarzano dwukrotnie, gdyż powtórzone wyniki (za pierwszym razem) również nie spełniły kryterium normalności rozkładu wyników pomiaru.
https://www.logistyka.net.pl/bank-wiedzy/pozostale-zagadnien...
4 KudoZ points awarded for this answer.
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