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?

107

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?

116

Explain the significance of transpose in r language

174

Describe sprintf() in r string manipulation?

What is bootstrapping in r?

116

Explain more functions in brief in r?

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

141

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

141

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

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

100

Enlist some of the functions that r provides?

What is r programming?

Differentiate between k-means clustering and hierarchical clustering?

110

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Un-Answered Questions { R Programming }

What is a factor?

How would you join multiple strings together?

What is r vector?

200

Given a vector of values, how would you convert it into a time series object?

105

How will you create scatterplot matrices in r language?

What is an Atomic vector and how many types of atomic vectors are present in R?

167

From the below data-set, extract only those values where age>60 and sex=”f”.

518

What are applications of recursion?

Explain different types of atomic vectors in R?

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

111

Describe strsplit() in r string manipulation?

Explain how R programming applied to the real world?

101

How To Create New Variable In R Programming?

Why R language?

How to create axes in the graph?

100

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