Introduction To R Programming - Study Mode

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[#1] They primary R system is available from the . . . . . . . .

(A) CRAN

(B) CRWO

(C) GNU

(D) CRDO

Correct Answer

(A) CRAN

[#2] What is the function used to test objects (returns a logical operator) if they are NaN?

(A) as.nan()

(B) is.na()

(C) as.na()

(D) is.nan()

Correct Answer

(D) is.nan()

[#3] Dataframes can be converted into a matrix by calling the following function data . . . . . . . .

(A) matr()

(B) matrix()

(C) matrixf()

(D) matrixfunc()

Correct Answer

(B) matrix()

[#4] Advanced programmers can write . . . . . . . . code to manipulate R objects.

(A) Python

(B) Java

(C) C

(D) Java Script

Correct Answer

(C) C

[#5] What will be the output of the following R code? y <- c(TRUE, 2)

(A) [1] "TRUE" "2"

(B) [1] "TRUE" 2

(C) [1] "0" "2"

(D) [1] 1 2

Correct Answer

(D) [1] 1 2