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Effectif tronqué

English translation: trimmed/truncated sample


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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
French term or phrase:Effectif tronqué
English translation:trimmed/truncated sample
Entered by: MAC_1980
Options:
- Contribute to this entry
- Include in personal glossary

14:46 Jan 26, 2012
French to English translations [PRO]
Science - Mathematics & Statistics
French term or phrase: Effectif tronqué
I am translating the results of a blood gas analysis report. It gives the values for pH, PO2 and CO2 and then gives the values for:

Effectif tronqué
Moyenne tronqué (calculée à partir de l'effectif tronqué)
Coefficient de variation (%)

Does anyone know what the English equivalent of "effectif tronqué" would be?

Thanks in advance for any help!
MAC_1980
Local time: 19:45
trimmed/truncated sample
Explanation:
Statistical Methods for Psychology - Google Books Result
books.google.com/books?isbn=0495597848...David C. Howell - 2009 - Psychology - 768 pages
Thus, with 40 cases, a 5% trimmed sample will be the sample with two of the observations in each tail eliminated. When comparing several groups, as in the

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Note added at 34 mins (2012-01-26 15:20:59 GMT)
--------------------------------------------------


Annales CNQ - an04plo
www.afssaps.fr/.../1c73576247f22f5c4fe611d3b0... - Translate this page
File Format: PDF/Adobe Acrobat - Quick View
minimum. nTr : effectif (tronqué) après élimination des valeurs situées à " 2s. mTr : moyenne (tronquée) calculée après élimination des valeurs situées à " 2s

--------------------------------------------------
Note added at 38 mins (2012-01-26 15:24:34 GMT)
--------------------------------------------------

Effectif = sample or population (size) in statistical terms

http://www.afssaps.fr/var/afssaps_site/storage/original/appl...

Calcul de la valeur cible : vu le faible nombre de résultats, c’est la médiane (Med), toutes techniques
confondues ainsi que la médiane pour la trousse utilisée. Cette dernière n’est calculée que sil’effectif
est suffisant (n >= 3). Le rapport (R) entre la médiane obtenue pour chaque trousse et la médiane
obtenue toutes techniques confondues est calculé.
 Calcul des paramètres estimant la dispersion : coefficient de variation tronqué (CVtr) et espace
interquartile. Le CVtr (écart-type / moyenne) exprimé en % est calculé après une troncature à 2 écartstypes,
c’est à dire après élimination des valeurs extrêmes en dehors de la moyenne ± 2 écarts-types.
L’espace interquartile représente l’intervalle centré sur la médiane qui comprend 50% de l’ensemble
des données.

--------------------------------------------------
Note added at 39 mins (2012-01-26 15:26:21 GMT)
--------------------------------------------------

http://en.wikipedia.org/wiki/Truncation_(statistics)

In statistics, truncation results in values that are limited above or below, resulting in a truncated sample.[1] Truncation is similar to but distinct from the concept of statistical censoring. A truncated sample can be thought of as being equivalent to an underlying sample with all values outside the bounds entirely omitted, with not even a count of those omitted being kept.

From a former biostatistics lecturer :-)
Selected response from:

SJLD
Local time: 20:45
Grading comment
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +2trimmed/truncated sample
SJLD
4truncated total
njweatherdon
3truncated sample size
DLyons


Discussion entries: 3





  

Answers


29 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
truncated total


Explanation:
:)

njweatherdon
Canada
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 4
Login to enter a peer comment (or grade)

30 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +2
trimmed/truncated sample


Explanation:
Statistical Methods for Psychology - Google Books Result
books.google.com/books?isbn=0495597848...David C. Howell - 2009 - Psychology - 768 pages
Thus, with 40 cases, a 5% trimmed sample will be the sample with two of the observations in each tail eliminated. When comparing several groups, as in the

--------------------------------------------------
Note added at 34 mins (2012-01-26 15:20:59 GMT)
--------------------------------------------------


Annales CNQ - an04plo
www.afssaps.fr/.../1c73576247f22f5c4fe611d3b0... - Translate this page
File Format: PDF/Adobe Acrobat - Quick View
minimum. nTr : effectif (tronqué) après élimination des valeurs situées à " 2s. mTr : moyenne (tronquée) calculée après élimination des valeurs situées à " 2s

--------------------------------------------------
Note added at 38 mins (2012-01-26 15:24:34 GMT)
--------------------------------------------------

Effectif = sample or population (size) in statistical terms

http://www.afssaps.fr/var/afssaps_site/storage/original/appl...

Calcul de la valeur cible : vu le faible nombre de résultats, c’est la médiane (Med), toutes techniques
confondues ainsi que la médiane pour la trousse utilisée. Cette dernière n’est calculée que sil’effectif
est suffisant (n >= 3). Le rapport (R) entre la médiane obtenue pour chaque trousse et la médiane
obtenue toutes techniques confondues est calculé.
 Calcul des paramètres estimant la dispersion : coefficient de variation tronqué (CVtr) et espace
interquartile. Le CVtr (écart-type / moyenne) exprimé en % est calculé après une troncature à 2 écartstypes,
c’est à dire après élimination des valeurs extrêmes en dehors de la moyenne ± 2 écarts-types.
L’espace interquartile représente l’intervalle centré sur la médiane qui comprend 50% de l’ensemble
des données.

--------------------------------------------------
Note added at 39 mins (2012-01-26 15:26:21 GMT)
--------------------------------------------------

http://en.wikipedia.org/wiki/Truncation_(statistics)

In statistics, truncation results in values that are limited above or below, resulting in a truncated sample.[1] Truncation is similar to but distinct from the concept of statistical censoring. A truncated sample can be thought of as being equivalent to an underlying sample with all values outside the bounds entirely omitted, with not even a count of those omitted being kept.

From a former biostatistics lecturer :-)

SJLD
Local time: 20:45
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 48

Peer comments on this answer (and responses from the answerer)
agree  B D Finch: From a former dabbler in the teaching of statistics.
1 hr
  -> thanks!
agree  DLyons: But I think the Glossary entry should be "truncated sample size".
5 hrs
  -> thanks - size in parentheses - since it will not always be idiomatic
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3 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
truncated sample size


Explanation:
As per additional context.

--------------------------------------------------
Note added at 5 hrs (2012-01-26 20:10:36 GMT)
--------------------------------------------------

Maybe I'm missing something, but MAC_1980 says "then gives the values for: ...
Effectif tronqué: 835"

This implies to me that the Effectif tronqué (or truncated sample size) is 835.

DLyons
Ireland
Local time: 19:45
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 16

Peer comments on this answer (and responses from the answerer)
neutral  B D Finch: "Size" is wrong here, as should be obvious from "calculée à partir de l'effectif tronqué". Yes. However the calculation of CV uses both sample values and sample size. "effectif suffisant" is "adequate sample size" might help.
16 mins
  -> Why? Isn't 835 the sample size??
neutral  SJLD: you can add size if you want, not really necessary, but of course 835 is the number of observations in the sample = size of the trimmed sample
2 hrs
  -> I think one needs to for clarity. I'm happy to remove this answer, if you add "size" to your answer :-) // P.S. I just noticed your 38 min note mentioning "size".
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