R Programming Basics MCQ question and answer with solution | R Programming MCQs

A. Vector

B. Lists

C. Matrix

D. Functions

A. C()

B. D()

C. E()

D. F()

A. Data.frames()

B. Data.sets ()

C. Function ()

D. C ()

A. as.character(x)

B. as.logical(x)

C. as.numeric(x)

D. as.num(y)

A. "integer"

B. "numeric"

C. "real"

D. "imaginary"

A. > x <- data.frame(foo = 1:4, bar = c(F, T, F, F))
> x

B. > x <- data.frame(foo = 1:6, bar = c(F, T, F, F))
> x

C. > x <- data.frame(foo = 1:4, bar = c(T, T, F, F))
> x

D. > x <- data.frame(foo = 14:1, bar = c(F, T, F, F))
> x

A. sort()

B. orderasc()

C. orderby()

D. sequence()

A. 1

B. 2

C. 3

D. 5

A. The usual operator, <-, can be thought of as a syntactic shortcut to expression operation

B. Assignment can also be made using the function assignment()

C. Vectors can be used in arithmetic expressions, in which case the operations are performed element by element

D. seq() is used to delete the numbers

A. matrices or more generally arrays are multi-dimensional generalizations of vectors

B. factors provide compact ways to handle categorical data

C. vectors provide a convenient way to return the results of a statistical computation

D. lists can be explicitly created using the list() function