R Programming MCQs With Answers

Welcome to the R Programming MCQs with Answers. In this post, we have shared R Programming Online Test for different competitive exams. Find practice R Programming Practice Questions with answers in Computer Tests exams here. Each question offers a chance to enhance your knowledge regarding R Programming.

R Programming Online Quiz

By presenting 3 options to choose from, R Programming Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of R Programming Questions and Answers and click over the correct answer.

• Test Name: R Programming MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply click on question and comment below that question. so that we can update the answer in the quiz section.

0

---

R Programming

Please fill out the form before starting Quiz.

1 / 40

What does the install.packages() function do in R?

Install new packages

Update R version

Load installed packages

2 / 40

Which function is used to apply a function to each element of a list in R?

apply()

sapply()

lapply()

3 / 40

________ is used to generate a sequence of dates in R.

date.seq()

seq.Date()

generate.date()

4 / 40

What is the correct way to assign a value to a variable in R?

x <- 5

x := 5

x = 5

5 / 40

________ is used to read data from a CSV file in R.

load.csv()

read.csv()

import.csv()

6 / 40

What is the purpose of the %in% operator in R?

Calculate percentage

Check for membership

Perform division

7 / 40

Which function is used to merge datasets by common columns in R?

merge()

combine()

join()

8 / 40

R is primarily used for _________.

Statistical computing

Web development

Game development

9 / 40

Which function is used to perform element-wise logical operations in R?

&

10 / 40

Which function is used to load a package in R?

require()

library()

load()

11 / 40

________ is used to round a numeric vector in R.

ceiling()

floor()

round()

12 / 40

What does the summary() function do in R?

Sort data

Summarize data

Print data

13 / 40

________ is used to calculate the standard deviation in R.

var()

mean()

sd()

14 / 40

Which function is used to create a vector of sequential integers in R?

c()

rep()

seq()

15 / 40

What does the plot() function do in R?

Print data

Create plots

Calculate regression

16 / 40

________ is used to calculate the quantile in R.

quartile()

percentile()

quantile()

17 / 40

________ is used to remove missing values from a dataset in R.

clearNA()

na.omit()

removeNA()

18 / 40

________ is used to denote the end of a command in R.

;

:

,

19 / 40

What is the purpose of the data.frame() function in R?

Create data frames

Calculate correlations

Plot data

20 / 40

Which symbol is used for element-wise multiplication in R?

*

%*%

%o%

21 / 40

Which function is used to calculate the mean in R?

mean()

median()

average()

22 / 40

Which function is used to calculate the factorial in R?

fact()

factorial()

fac()

23 / 40

What is the purpose of the subset() function in R?

Sort data

Subset data

Extract columns

24 / 40

________ is used to calculate the correlation coefficient in R.

cov()

corcoef()

cor()

25 / 40

________ is used to calculate the exponential function in R.

log()

sqrt()

exp()

26 / 40

________ is used to generate random numbers from a normal distribution in R.

randnorm()

rnorm()

random()

27 / 40

What does the lm() function do in R?

Calculate mean

Fit linear regression model

Compute logistic regression

28 / 40

What does the apply() function do in R?

Apply function over data frame

Apply function over vector

Apply function over array

29 / 40

What is the purpose of the %>% operator (pipe) in R?

Compare values

Logical AND

Pipe operator

30 / 40

Which function is used to apply a function over a vector in R?

sapply()

lapply()

apply()

31 / 40

What does the aggregate() function do in R?

Filter data

Aggregate data

Plot data

32 / 40

In R, ________ is used to comment a single line.

#

//

/* */

33 / 40

Which function is used to calculate the cumulative sum in R?

cumul()

cumsum()

sumcum()

34 / 40

________ is used to extract a single element from a vector in R.

[]

{}

()

35 / 40

What is the purpose of the attach() function in R?

Print a dataset

Attach a dataset

Load a package

36 / 40

What does the rbind() function do in R?

Split data frames

Combine data frames by rows

Combine data frames by columns

37 / 40

What does the seq() function do in R?

Sort data

Generate sequences

Calculate standard deviation

38 / 40

Which function is used to convert factors to numeric values in R?

as.numeric()

factor.numeric()

convert.numeric()

39 / 40

________ is used to check the class of an object in R.

typeof()

type()

class()

40 / 40

Which function is used to create a bar plot in R?

barplot()

plot()

hist()

0%

Restart quiz

Download Certificate of Quiz R Programming

On the end of Quiz, you can download the certificate of the quiz if you got more than 70% marks. Add a certificate to your job application or social profile (like LinkedIn) and get more job offers.

Download R Programming MCQs with Answers Free PDF

You can also download 100 R Programming Questions with Answers free PDF from the link provided below. To Download file in PDF click on the arrow sign at the top right corner.

If you are interested to enhance your knowledge regarding  English, Physics, Chemistry, and Biology please click on the link of each category, you will be redirected to dedicated website for each category.