
QCM1 R les bases
Quiz
•
Information Technology (IT)
•
University
•
Practice Problem
•
Easy
Marion WILTHIEN
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le type de données de l'objet x dans l'instruction suivante :
x <- 5.7
Caractère
Numérique
Logique
Complexe
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel opérateur est utilisé pour l'assignation de valeurs dans R ?
=
<-
->
==
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle sera la valeur de l'expression suivante dans R ?
2 + 3 * 4
14
20
24
9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le type de l'objet suivant ?
x <- c(1, 2, 3, 4)
Matrice
Liste
Vecteur
Dataframe
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Comment accéder au deuxième élément d'un vecteur x dans R ?
x[2]
x(2)
x <- 2
x[1, 2]
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle sera la sortie de l'instruction suivante ?
x <- c(2, 4, 6)
y <- c(1, 2, 3)
x + y
c(3, 6, 9)
c(1, 2, 3)
c(2, 4, 6)
Une erreur
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le résultat de cette opération :
x <- c(10, 20, 30)
x * 2
c(5, 10, 15)
c(10, 20, 30)
c(20, 40, 60)
c(2, 4, 6)
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