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 }

how would you build a scatter-plot using plotly?

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

Write a custom function in R?

What are the different packages in r?

Why the stepaic()?

What is r vector?

200

Explain advantages of density-based clustering in R?

What is expected from running the command – strsplit(x,”e”)?

109

Explain how to read data or a matrix from a file?

124

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

What is object-oriented programming in r?

101

What is attribute function in r?

142

What is R lists?

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?

Explain how to save graphs in R?

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