Glossary entry (derived from question below)
French term or phrase:
pas de sondage
English translation:
sampling interval
French term
pas de sondage
TIA
| 4 +1 | sampling interval |
Jennifer Levey
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| 3 | sampling ratio |
Philippe Etienne
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| Juste une explication |
Béatrice Sylvie Lajoie
|
Aug 30, 2009 15:47: Béatrice Sylvie Lajoie changed "Level" from "Non-PRO" to "PRO"
Oct 12, 2009 20:30: mediamatrix (X) Created KOG entry
PRO (3): Philippe Etienne, mediamatrix (X), Béatrice Sylvie Lajoie
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Proposed translations
Chile
Human-scale Globalization
Native in: English (Variant: British) 
Works in: Spanish to English, French to English, English to Spanish, and 2 more.
sampling interval
It's the 'distance' - in this case, in terms of 'number of 'officines a visiter' - between one sample and the next.
It would appear that they listed the 108 'officines' contained in the sample in numerical order of their size (as a share of the whole sample size), and then went and visited every fourth officine in that list (e.g. numbers 1,5,9,etc.).
| agree |
Philippe Etienne
: I didn't pay attention to the systématique bit... and the sampling-a-sample setting
1 hr
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|
Thank you Philippe - a scholar and a gentleman!
|
Spain
In the reader's shoes since 2000
Native in: French (Variant: Standard-France) 
Works in: English to French
sampling ratio
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Note added at 31 mins (2009-08-30 10:56:14 GMT)
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Actually the sampling ratio here would be 1/4 I think.
Inverse sampling ratio is 4
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Note added at 1 hr (2009-08-30 11:48:53 GMT)
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So:
pas de sondage = inverse sampling ratio
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Note added at 4 hrs (2009-08-30 14:26:05 GMT)
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from my post in the discussion part, it looks like pas de sondage here (échantillonnage systématique) equals inverse sampling ratio. It may not be the case everywhere.
Reference comments
Master's degree in Law, accurate
Native in: French , English
Works in: Italian to French, English to French
Juste une explication
SONDAGE SYSTÉMATIQUE
Parfois appelé échantillonnage par intervalles, l'échantillonnage systématique signifie qu'il existe un écart, ou un intervalle, entre chaque unité sélectionnée qui est incluse dans l'échantillon. On dispose d'un ensemble d'individus dans un ordre fixé.
On calcule un nombre appelé "pas de tirage" ou "pas de sondage" : PAS = N/n
Pour constituer l'échantillon il faut choisir au hasard (aléatoirement) un entier naturel d entre 1 et PAS (cet entier sera le point de départ), l'individu dont le numéro correspond à d est le premier individu, pour sélectionner les autres, il sufft
d'ajouter à d le pas de sondage : les individus choisis seront alors ceux dont les numéros correspondent à d + PAS, d + 2PAS, d + 3PAS etc.
Si la population est distribuée au hasard dans la base de sondage, un échantillonnage systématique donnera des résultats similaires à ceux d'un échantillonnage aléatoire simple
Discussion
Échantillonnage systématique
Méthode de sélection systématique d’un échantillon dans lequel le premier élément est sélectionné aléatoirement dans
une population (origine choisie au hasard) et dont les éléments restants sont tirés à des intervalles échelonnés
également (taux d’échantillonnage inverse). Avec un taux d’échantillonnage de 1 pour 10, et un point de départ au
hasard à 7, la 7e unité est sélectionnée. Par la suite chaque 10e unité est choisie, dont la 17e, la 27e, la 37e, etc.
It looks like that mediametrix is right. I missed the sampling a sample bit.