Data Structures In R Programming - Study Mode

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[#51] Which of the following object is masked from 'package: stats'?

(A) filter

(B) union

(C) set difference

(D) get difference

Correct Answer

(A) filter

[#52] What will be the output of the following R code? > x <- list(aardvark = 1:5)
> x[["a", exact = FALSE]]

(A) 1 2 3 4 5

(B) 2 3 5

(C) 1 3 3 5

(D) 1 2 3

Correct Answer

(A) 1 2 3 4 5

[#53] . . . . . . . . generate summary statistics of different variables in the data frame, possibly within strata.

(A) rename

(B) summarize

(C) set

(D) subset

Correct Answer

(B) summarize

[#54] What will be the output of the following R code? > x <- list(aardvark = 1:5)
> x$a

(A) 1 2 3 4 5

(B) 2 3 5

(C) 1 3 3 5

(D) 1 2 3

Correct Answer

(A) 1 2 3 4 5

[#55] One way to pass data around is by de parsing the R object with . . . . . . . .

(A) dput()

(B) write()

(C) read()

(D) dget()

Correct Answer

(A) dput()