R Programming Basics MCQ question and answer with solution

21.
What is the purpose of the length() function in R?

A. Returns the sum of elements

B. Returns the number of elements

C. Computes the length of a vector

D. Calculates the mean of a vector

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22.
In R, how do you create a sequence of even numbers from 2 to 10?

A. seq(2, 10, by = 2)

B. seq_even(2, 10)

C. even_seq(2, 10)

D. seq(2, 10)

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23.
What does the sort() function do in R?

A. Arrange elements in ascending order

B. Shuffle the elements randomly

C. Reverse the order of elements

D. Sort elements in descending order

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24.
How do you calculate the mean of a numeric vector in R?

A. mean(vector)

B. average(vector)

C. vec_mean(vector)

D. calc_mean(vector)

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25.
In R, how is the minimum value of a numeric vector calculated using the min() function?

A. min(vector)

B. minimum(vector)

C. vectorMin(vector)

D. min_value(vector)

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26.
What does the rev() function do in R?

A. Reverse the order of elements

B. Remove duplicate elements

C. Rotate elements to the right

D. Sort elements in descending order

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27.
How do you create a vector of logical values in R?

A. c(TRUE, FALSE, TRUE)

B. vector(TRUE, FALSE, TRUE)

C. logical_vector(TRUE, FALSE, TRUE)

D. create_logical_vector(TRUE, FALSE)

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28.
In R, what does the abs() function do?

A. Return the absolute values of elements

B. Compute the average of elements

C. Calculate the square root

D. Find the maximum value

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29.
What is the purpose of the unique() function in R?

A. Remove duplicate elements from a vector

B. Identify unique elements in a vector

C. Create a vector of unique values

D. Find the maximum unique value

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30.
How do you create a vector of characters in R?

A. c("apple", "banana", "cherry")

B. char_vector("apple", "banana", "cherry")

C. vector("apple", "banana", "cherry")

D. create_char_vector("apple", "banana")

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

21. What is the purpose of the length() function in R?

Answer & Solution

22. In R, how do you create a sequence of even numbers from 2 to 10?

Answer & Solution

23. What does the sort() function do in R?

Answer & Solution

24. How do you calculate the mean of a numeric vector in R?

Answer & Solution

25. In R, how is the minimum value of a numeric vector calculated using the min() function?

Answer & Solution

26. What does the rev() function do in R?

Answer & Solution

27. How do you create a vector of logical values in R?

Answer & Solution

28. In R, what does the abs() function do?

Answer & Solution

29. What is the purpose of the unique() function in R?

Answer & Solution

30. How do you create a vector of characters in R?

Answer & Solution

Read More Section(R Programming Basics)

21.
What is the purpose of the length() function in R?

22.
In R, how do you create a sequence of even numbers from 2 to 10?

23.
What does the sort() function do in R?

24.
How do you calculate the mean of a numeric vector in R?

25.
In R, how is the minimum value of a numeric vector calculated using the min() function?

26.
What does the rev() function do in R?

27.
How do you create a vector of logical values in R?

28.
In R, what does the abs() function do?

29.
What is the purpose of the unique() function in R?

30.
How do you create a vector of characters in R?