R Programming Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

R Programming Interview Questions

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What are the different data structures in r? Briefly explain about them.

Name some functions which can be used for debugging in r?

How would you measure correlation in r?

How would you create a scatterplot using ggplot2 package?

how would you build a scatter-plot using plotly?

What are the different import functions in r?

How do you install a package in r?

From the below data-set, extract only those values where age>60 and sex=”f”.

405

How would you make multiple plots onto a single page in r?

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

Name some functions available in “dplyr” package.

How would you check the distribution of a categorical variable in r?

Explain about “initialize()” function in r?

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

How would you create a new r6 class?

Un-Answered Questions { R Programming }

What are the steps to build and evaluate a linear regression model in r?

What are the different packages in r?

What does tcp/ip work?

Given a vector of values, how would you convert it into a time series object?

What is JIT in R?

Give the command to check if the element 15 is present in vector x?

how would you build a scatter-plot using plotly?

What is the different type of sorting algorithms available in R language?

How would you extract one particular word from a string?

What is the usage of the lattice package in R?

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

What is the use of sink(), Library () and search() function?

Explain how to create a function in arguments using apply() in r?

Explain about confusion matrix in r?

Explain the usage of which() function in r language?

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