R Programming MCQ Questions with answers and solutions Page 123

Q. What is the output of the following R code: for (i in 1:5) { if (i == 3) next; print(i) }

(A) 1, 2, 4, 5
(B) 1, 2, 3, 4, 5
(C) 2, 4
(D) 0, 1, 2, 3, 4

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✅ Correct Answer: (A) 1, 2, 4, 5

Published by Sonali Mishra ⭐ 4.53K Points at 12-Mar-2025 10:24 pm in R Programming

Q. Which control structure in R is used to execute a block of code repeatedly until a condition is met?

(A) if-else loop
(B) for loop
(C) while loop
(D) do-while loop

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✅ Correct Answer: (C) while loop

Published by Ravi Shankar ⭐ 4.19K Points at 12-Mar-2025 10:24 pm in R Programming

Q. In R, what is the purpose of the if-else statement?

(A) To execute a block of code if a condition is true, otherwise execute another block of code
(B) To create a loop that iterates a specified number of times
(C) To check multiple conditions sequentially
(D) To execute a block of code repeatedly until a condition is met

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✅ Correct Answer: (A) To execute a block of code if a condition is true, otherwise execute another block of code

Published by Ranjeet ⭐ 34.60K Points at 12-Mar-2025 10:24 pm in R Programming

Q. How is the switch() function used in R?

(A) To toggle between TRUE and FALSE values
(B) To switch the positions of two elements
(C) To select one of several alternatives
(D) To change the direction of a loop

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✅ Correct Answer: (C) To select one of several alternatives

Published by Pooja ⭐ 4.41K Points at 12-Mar-2025 10:24 pm in R Programming

Q. In R, what is the syntax for the for loop?

(A) for (i in 1:10) { code_block }
(B) for (i = 1 to 10) { code_block }
(C) for (i = 1; i <= 10; i++) { code_block }
(D) for (i from 1 to 10) { code_block }

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✅ Correct Answer: (A) for (i in 1:10) { code_block }

Published by Vijay Sangwan ⭐ 28.62K Points at 12-Mar-2025 10:24 pm in R Programming

Q. What is the purpose of the break statement in a loop in R?

(A) To exit the loop immediately
(B) To skip the current iteration of the loop
(C) To restart the loop from the beginning
(D) To increment the loop variable

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✅ Correct Answer: (A) To exit the loop immediately

Published by Praveen Singh ⭐ 36.81K Points at 12-Mar-2025 10:24 pm in R Programming

Q. How is a while loop different from a for loop in R?

(A) while loop is used for fixed iterations, for loop for variable iterations
(B) for loop is used for fixed iterations, while loop for variable iterations
(C) Both while and for loops are used for fixed iterations
(D) Both while and for loops are used for variable iterations

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✅ Correct Answer: (B) for loop is used for fixed iterations, while loop for variable iterations

Published by Shiva Ram ⭐ 30.44K Points at 12-Mar-2025 10:24 pm in R Programming

Q. What does the next statement do in R?

(A) Jumps to the next iteration of the loop
(B) Ends the loop immediately
(C) Skips the next condition in an if-else statement
(D) Moves to the next element in a vector

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✅ Correct Answer: (A) Jumps to the next iteration of the loop

Published by Priyanka Tomar ⭐ 35.28K Points at 12-Mar-2025 10:24 pm in R Programming

Q. In R, what is the purpose of the repeat loop?

(A) To repeat a block of code until a certain condition is met
(B) To repeat a block of code a specified number of times
(C) To repeat a block of code indefinitely
(D) To repeat a block of code based on a specific condition

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✅ Correct Answer: (C) To repeat a block of code indefinitely

Published by Rakesh Kumar ⭐ 28.44K Points at 12-Mar-2025 10:24 pm in R Programming

Q. What is the result of the expression 5 %% 2 in R?

(A) 1
(B) 2
(C) 2.5
(D) 0.5

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✅ Correct Answer: (A) 1

Published by Priyanka Tomar ⭐ 35.28K Points at 12-Mar-2025 10:24 pm in R Programming

R Programming MCQs with answers Page - 123

Q. What is the output of the following R code: for (i in 1:5) { if (i == 3) next; print(i) }

Q. Which control structure in R is used to execute a block of code repeatedly until a condition is met?

Q. In R, what is the purpose of the if-else statement?

Q. How is the switch() function used in R?

Q. In R, what is the syntax for the for loop?

Q. What is the purpose of the break statement in a loop in R?

Q. How is a while loop different from a for loop in R?

Q. What does the next statement do in R?

Q. In R, what is the purpose of the repeat loop?

Q. What is the result of the expression 5 %% 2 in R?

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