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 create a factor in r?

What is a random walk model?

Give some examples of the functions in stringr.

How would you write a custom function in r? Give an example.

How do you build and evaluate a random forest in r?

How would you do a cross-product of two tables in r?

What are the steps to build and evaluate a linear regression model in r?

What is the difference between a bar-chart and a histogram?

What do you know about the rattle package in r?

What is the difference between a bar-chart and a histogram? Where would you use a bar-chart and where would you use a histogram?

Given a vector of numbers, how would you turn the values into scientific notation?

How would you facet the data using ggplot2 package?

How would you find out the mean of one column with respect to another?

157

Tell me something about shinyr.

How can you simulate random walk model using r?

110

Un-Answered Questions { R Programming }

Mention how you can produce co-relations and covariances?

How would you make multiple plots onto a single page in r?

116

What are the different import functions in r?

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

104

What do you understand by data visualization in R using ggplot2?

What is the table in r?

What is the use of “next” statement in R?

How would you create a factor in r?

How will you merge two dataframes in r programming language?

What is the difference between a bar-chart and a histogram? Where would you use a bar-chart and where would you use a histogram?

What is r vector?

188

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

What are Generic Functions in R?

187

What is oop in r?

What is the tree in r?

113

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