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?

102

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?

159

Tell me something about shinyr.

How can you simulate random walk model using r?

121

Un-Answered Questions { R Programming }

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

How would you find the number of missing values in a dataset and remove all of them?

Why is R Good for business?

Explain how you can create a table in r without external file?

495

What is principal component analysis and how can you create a pca model in r?

Give the syntax for creating scatterplot matrices?

111

How would you extract one particular word from a string?

What is meant by ANOVA models in R?

Explain how to access list elements in r?

100

What is mean in r?

109

Define Cluster.stats() ?

What is bytecode compilation?

123

Explain disadvantages of density-based clustering in R?

Write a function in R language to replace the missing value in a vector with the mean of that vector?

170

How r handles missing values?

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