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?

124

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?

103

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?

119

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 length function in r?

106

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

111

What packages are used for data mining in r?

How data is aggregated in r?

What are the different import functions in r?

In r how missing values are represented?

What is the use of apply() in R?

What are prerequisites for r’s c interface?

102

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

497

Write the r programming code for an array of words so that the output is displayed in decreasing frequency order?

115

Explain in brief preliminaries of C/C++?

111

What is the function definition?

What do you know about the rattle package in r?

What do you understand by data visualization in R using ggplot2?

What are sockets in r?

107

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