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 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?

114

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

148

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

103

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

Un-Answered Questions { R Programming }

What is the difference between a bar-chart and a histogram? Where would you use a bar-chart and where would you use a histogram?

What is the use of lattice package?

how would you build a scatter-plot using plotly?

What is the power analysis?

how can you add datasets in r?

102

Why is library() function used in r?

What are the applications of R?

What is s4?

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

What is the function in r?

Explain how to write files?

What is variance in r?

What will be the result of multiplying two vectors in r having different lengths?

108

What is transpose?

114

What are the different components of grammar of graphics?

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