R Programming Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

R Programming Interview Questions

Questions Answers Views Company eMail

How would you do a left and right join in r?

100

Name some packages in r, which can be used for data imputation?

188

What is a factor? How would you create a factor in r?

What is the use of stringr package. Give some examples of the functions in stringr.

give examples of while and for loop in r.

How do I sort in descending order in r?

100

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Un-Answered Questions { R Programming }

Explain the usage of which() function in r language?

106

What is function in r?

106

How can you merge two data frames in R language?

141

Describe grep() in r string manipulation?

What is the regular expression in R string manipulation?

100

What are the data structures in R that are used to perform statistical analyses and create graphs?

313

How would you rename the columns of a dataframe?

What are r data types?

117

What makes a valid variable name in R?

127

how would you build a scatter-plot using plotly?

What are the different components of grammar of graphics?

I have a string “contact@dataflair.com”. Which string function can be used to split the string into two different strings “contact@dataflair” and “com”?

103

Explain how you can create a table in r without external file?

497

What is a random walk model?

103

What are R Functions?

102

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