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

R Programming Interview Questions

Questions Answers Views Company eMail

Write the syntax to set the path for current working directory in r environment?

103

Describe nchar() in r string manipulation?

R programming language has several packages for data science which are meant to solve a specific problem, how do you decide which one to use?

What will be the result of multiplying two vectors in r having different lengths?

112

Explain the significance of transpose in r language

168

Describe sprintf() in r string manipulation?

What is bootstrapping in r?

111

Explain more functions in brief in r?

How will you convert a factor variable to numeric in r language?

139

Which function in r language is used to find out whether the means of 2 groups are equal to each other or not?

139

What is the difference between library() and require() functions in r language?

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

Enlist some of the functions that r provides?

What is r programming?

Differentiate between k-means clustering and hierarchical clustering?

106

Un-Answered Questions { R Programming }

What is recursion in r?

105

Write the syntax to set the path for current working directory in r environment?

103

How will you list all the datasets available in all R packages?

What are co-relations in R?

Explain how to save graphs in R?

What is a dataframe in r?

What will be the output of log (-5.8) when executed on r console?

Which data object in r is used to store and process categorical data?

123

Which function is used to write files?

How many data structures R has?

What do you understand by scientific data visualization in R?

101

Describe nchar() in r string manipulation?

How can you simulate random walk model using r?

115

Write the r programming code for an array of words so that the output is displayed in decreasing frequency order?

107

What are statistical features of R?

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