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 you can produce co-relations and covariances?

How data is aggregated in r?

Explain what is t-tests in r?

How you can create a table in r without external file?

What is transpose?

120

What are the data structures in r that is used to perform statistical analyses and create graphs?

How can you simulate noise model using r?

What are the different components of grammar of graphics?

What is correlation? How would you measure correlation in r?

How can you create a pca model in r?

115

What is principal component analysis?

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

Give examples of “select” and “filter” functions from “dplyr” package.

How would you create a box-plot using “plotly”?

How would you rename the columns of a dataframe?

Un-Answered Questions { R Programming }

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

267

Why is R Good for business?

What are the tools for debugging in R?

Write the syntax to set the path for a current working directory in r environment?

117

Describe sprintf() in r string manipulation?

What are vector functions?

102

What are the different packages in r?

How many types of object are present In R?

101

Compare R with other technologies.

What is power analysis ?

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

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

How can you simulate random walk model using r?

121

Explain bor function?

103

What is regular expression syntax?

103

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