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 join multiple strings together?

What is a random walk model and how can you simulate it using r?

How can you load a .csv file in r?

What is a factor?

What is a white noise model?

What is a white noise model and how can you simulate it using r?

Explain the different data structures in r?

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

Give examples of “rbind()” and “cbind()” functions in r

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What is the use of stringr package.

Explain about confusion matrix in r?

How would you extract one particular word from a string?

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

What do you know about the evaluate_model() function from “statisticalmodeling” package

How would you fit a linear model over a scatter-plot?

Un-Answered Questions { R Programming }

Compare R with other technologies.

What do you know about the rattle package in r?

Which packages are used to store and restore R objects to and from a file in R language?

Give the syntax for creating scatterplot matrices?

Explain DBSCAN algorithm in R?

What is the apply() family in r?

Explain about confusion matrix in r?

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

What are the disadvantages of R?

What are the steps involved in building and evaluating a linear regression model in r?

What is recursive function in r?

Which function is used to write files?

What does not ‘r’ language do?

What do you mean by data visualization in R?

What is the function in r?

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