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

R Programming Interview Questions

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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?

127

Tell me something about shinyr.

How can you simulate random walk model using r?

Un-Answered Questions { R Programming }

What are useful s3 method functions?

What is sapply() in r?

What is GUI in R?

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

What is the use of lattice package?

What is the table in r?

What are the tools for debugging in R?

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

Explain main features to write R code that runs faster?

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How many control statements are present in r?

What are the different packages in r?

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

Which package provides the bootstrapping?

How do you get the standard deviation for a vector x?

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