Week 1 Flashcards

1
Q

Population?

A

Ensemble de tous les faits, tous les objets, personnes, etc

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2
Q

Échantillon?

A

Sous-ensemble de la population

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3
Q

Unité statistique

A

Un seul élément de la population

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4
Q

Taille de la population?

A

N

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5
Q

Taille de l’échantillon?

A

n

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6
Q

Recensement?

A

= Population, on interroge tous le monde

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7
Q

Sondage?

A

= échantillon, on interroge une partie de la population

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8
Q

Variable?

A

Peut avoir différentes formes pour chaque unité statistique

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9
Q

Donnée?

A

Chacune des informations recueillies

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10
Q

Comment on désigne des variables?

A

X Y Z

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11
Q

Comment on désigne la valeur d’une variable?

A

x y z

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12
Q

Quelles sont les 2 types de variables générales?

A

Qualitatives et quantitatives

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13
Q

2 types de variable qualitative et les expliquer?

A

Ordinale (peut les mettre en ordre)
Nominale (Ne peut pas les ordonner)

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14
Q

2 types de variable quantitative et les expliquer?

A

Discrète (ne peut pas plus préciser)
Continue (peut préciser encore plus)

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15
Q

Comment s’exprime une variable qualitative?

A

Modalités

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16
Q

Comment s’exprime une variable quantitative?

A

Valeurs