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?

103

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?

103

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

108

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?

102

How would you facet the data using ggplot2 package?

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

161

Tell me something about shinyr.

How can you simulate random walk model using r?

123

Un-Answered Questions { R Programming }

What is a class in r?

How r handles missing values?

What is transpose?

124

What are R Functions?

102

What data Visualizations in R you should learn?

111

Name the functions which help in importing data from other applications in R?

101

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

Describe nchar() in r string manipulation?

102

How will you combine multiple different string like “data”, “science”, “in” ,“r”, “programming” as a single string “data_science_in_r_programmming” ?

134

What are the different packages in r?

What is variance in r?

What is R?

What is rattle package in r?

What is a random walk model and how can you simulate it using r?

105

How you can start the r commander gui?

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