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?

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Tell me something about shinyr.

How can you simulate random walk model using r?

Un-Answered Questions { R Programming }

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

What is the of use Matrix package?

What is attribute function in r?

Mention how you can produce co-relations and covariances?

What is data import in r language?

What is the table in r?

What are packages in r?

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What is recycling of elements in an r vector? Give an example.

What are vector functions?

Write a custom function which will replace all the missing values in a vector with the mean of values.

What are sockets in r?

What is with () and by () function in r is used for?

Which data structure is used to store categorical variables?

How data is aggregated in r?

What do you know about the rattle package in r?

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