Control Structures in R Programming MCQ question and answer with solution | R Programming MCQs

A.

> f <- function() {
+              cat("Hello, world!\n")
+ }
> f()

B.

>  f <- function() {
+              cat("Hello, World!\n")
+ }
< f()

C.

> f <- function() {
+             cat("Hello world!\n")
+ }
>>= f()

D.

> f <- function() {
-             cat("Hello world!\n")
+ }
<= f()

A. 32

B. 42

C. 52

D. 45

A. rep statement

B. repeat statement

C. repeat else

D. repeat while

A. Boxplot()

B. Text()

C. Boxplot() or Text()

D. Treat()

A.

x <- runif(1, 0, 10)
if(x > 3) {
    y <- 10
} else {
    y <- 0
}

B.

x <- run(1, 0, 10)
if(x > 3) {
    y <- 10
} else {
    y <- 0
}

C.

x <- random(1, 0, 10)
if(x > 3) {
    y <- 10
} else {
    y <- 0
}

D.

x <- random(1, 0, 10)
if(x > 1) {
    y <- 0
} else {
    x <- 0
}

A. Subset()

B. Sample()

C. While()

D. Signal()

A. The search list can be found by using the searchlist() function

B. The search list can be found by using the search() function

C. The global environment or the user's workspace is always the second element of the search list

D. R has separate namespaces for functions and non-functions

A. Statements cannot be grouped together using braces '{' and '}'

B. Computation in R consists of sequentially evaluating statements

C. Single statements are evaluated when a new line is typed at the end of the syntactically complete statement

D. next is used to skip an iteration of a loop

A. Error

B. Warning

C. Messages

D. 0

A. message

B. error

C. warning

D. message & warning