R Programming Basics - Study Mode

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[#66] How is the maximum value of a numeric vector calculated in R using the max() function?

(A) max(vector)

(B) maximum(vector)

(C) vectorMax(vector)

(D) max_value(vector)

Correct Answer

(A) max(vector)

[#67] In R, what does the function tolower("WORLD") return?

(A) "world"

(B) "WORLD"

(C) "wOrLd"

(D) "World"

Correct Answer

(A) "world"

[#68] Which function can be used to determine the names assigned to a list?

(A) Names

(B) Name

(C) Nam

(D) Nem

Correct Answer

(A) Names

[#69] The length of a list is . . . . . . . . to the number of components in that list.

(A) Double

(B) Equal

(C) Triple

(D) One fourth

Correct Answer

(B) Equal

[#70] What will be the output of the following R code? > x <- 1:3
> names(x)

(A) NULL

(B) 1

(C) 2

(D) 4.5

Correct Answer

(A) NULL