R Programming MCQ Questions with answers and solutions Page 45

Q. Point out the correct statement?

(A) lapply() takes elements of the list and passes them as the first argument of the function you are applying
(B) You can use lapply() to evaluate a function multiple times each with a different argument
(C) Functions that you pass to lapply() may have other arguments
(D) None of the mentioned

💬 Discuss

✅ Correct Answer: (D) None of the mentioned

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of the following R code?
> printmessage <- function(x) {
+ if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage(NA)

(A) Error
(B) Warning
(C) Messages
(D) x is greater than zero

💬 Discuss

✅ Correct Answer: (A) Error

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. A . . . . . . . . in R programming language can also contain numeric and alphabets along with special characters like dot and underline.

(A) Variable name
(B) Number
(C) Integer
(D) Character

💬 Discuss

✅ Correct Answer: (A) Variable name

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of the following R code?
> nLL <- make.NegLogLik(normals, c(FALSE, 2))
> optimize(nLL, c(-1, 3))$minimum

(A) 1.217775
(B) 2.217775
(C) 3
(D) empty

💬 Discuss

✅ Correct Answer: (D) empty

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. How do you create log linear models in R language?

(A) loglm()
(B) logmn()
(C) logfn()
(D) loghy()

💬 Discuss

✅ Correct Answer: (A) loglm()

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of the following R code?
> x <- 3
> switch(2, 2+2, mean(1:10), rnorm(5))

(A) 5
(B) 5.5
(C) NULL
(D) 58

💬 Discuss

✅ Correct Answer: (B) 5.5

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. What will be the output of the following R code snippet?
> f <- function(num = 1) {
+ hello <- "Hello, world!\n"
+ for(i in seq_len(num)) {
+ cat(hello)
+ }
+ chars <- nchar(hello) * num
+ chars
+ }
> f()

(A) Hello, world! [1] 14
(B) Hello, world! [1] 15
(C) Hello, world! [1] 16
(D) Error

💬 Discuss

✅ Correct Answer: (A) Hello, world! [1] 14

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. . . . . . . . . function can be used to select the random sample of size 'n' from a huge dataset.

(A) Simple()
(B) Sample()
(C) While()
(D) Signal()

💬 Discuss

✅ Correct Answer: (B) Sample()

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. . . . . . . . . package in R language provides various options for re-randomization and permutations based on statistical tests.

(A) Coin
(B) Vain
(C) Join
(D) Lain

💬 Discuss

✅ Correct Answer: (A) Coin

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

Q. . . . . . . . . can be used for storing the data for long-term.

(A) HDLS
(B) HDFS
(C) HDLSV
(D) HSSLV

💬 Discuss

✅ Correct Answer: (B) HDFS

Published by Mr. Dubey ⭐ 111.42K Points at 21-Apr-2024 10:12 am in R Programming

R Programming MCQs with answers Page - 45

Q. Point out the correct statement?

Q. What will be the output of the following R code?
> printmessage <- function(x) {
+ if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage(NA)

Q. A . . . . . . . . in R programming language can also contain numeric and alphabets along with special characters like dot and underline.

Q. What will be the output of the following R code?
> nLL <- make.NegLogLik(normals, c(FALSE, 2))
> optimize(nLL, c(-1, 3))$minimum

Q. How do you create log linear models in R language?

Q. What will be the output of the following R code?
> x <- 3
> switch(2, 2+2, mean(1:10), rnorm(5))

Q. What will be the output of the following R code snippet?
> f <- function(num = 1) {
+ hello <- "Hello, world!\n"
+ for(i in seq_len(num)) {
+ cat(hello)
+ }
+ chars <- nchar(hello) * num
+ chars
+ }
> f()

Q. . . . . . . . . function can be used to select the random sample of size 'n' from a huge dataset.

Q. . . . . . . . . package in R language provides various options for re-randomization and permutations based on statistical tests.

Q. . . . . . . . . can be used for storing the data for long-term.

Programming Categories

📱 Download Our App

R Programming MCQs with answers Page - 45

Q. Point out the correct statement?

Q. What will be the output of the following R code? > printmessage <- function(x) { + if(x > 0) + print("x is greater than zero") + else + print("x is less than or equal to zero") + invisible(x) + } > printmessage(NA)

Q. A . . . . . . . . in R programming language can also contain numeric and alphabets along with special characters like dot and underline.

Q. What will be the output of the following R code? > nLL <- make.NegLogLik(normals, c(FALSE, 2)) > optimize(nLL, c(-1, 3))$minimum

Q. How do you create log linear models in R language?

Q. What will be the output of the following R code? > x <- 3 > switch(2, 2+2, mean(1:10), rnorm(5))

Q. What will be the output of the following R code snippet? > f <- function(num = 1) { + hello <- "Hello, world!\n" + for(i in seq_len(num)) { + cat(hello) + } + chars <- nchar(hello) * num + chars + } > f()

Q. . . . . . . . . function can be used to select the random sample of size 'n' from a huge dataset.

Q. . . . . . . . . package in R language provides various options for re-randomization and permutations based on statistical tests.

Q. . . . . . . . . can be used for storing the data for long-term.

Programming Categories

📱 Download Our App

Q. What will be the output of the following R code?
> printmessage <- function(x) {
+ if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage(NA)

Q. What will be the output of the following R code?
> nLL <- make.NegLogLik(normals, c(FALSE, 2))
> optimize(nLL, c(-1, 3))$minimum

Q. What will be the output of the following R code?
> x <- 3
> switch(2, 2+2, mean(1:10), rnorm(5))

Q. What will be the output of the following R code snippet?
> f <- function(num = 1) {
+ hello <- "Hello, world!\n"
+ for(i in seq_len(num)) {
+ cat(hello)
+ }
+ chars <- nchar(hello) * num
+ chars
+ }
> f()